Here is a better web site. It says it has a 1/2" chip

http://www.opticstar-ccd.com/Run/AS/AS-Imagers-OS.asp?p=0_10_0_50_87

I've got nothin' to do and all day to do it. I'm retired.



On Nov 27, 2009, at 11:54 AM, "leotaylor2" <leotaylor@...> wrote:

> --- Darwin Teague wrote:
> >
> > I ordered one of these tonight, so I'll be able to give a good
> review after Christmas.
> >
> > http://www.optcorp.com/product.aspx?pid=13954&kw=PL-131C&st=2
> >
>
> I hope your new purchase works out well.
>
> I can't correlate the specifications on the site you linked:
>
> CoolAir 1.3 MP Color CMOS
> Resolution: 1280 x 1024
> Pixel Array: 640x480
> Sensor Size: Not mentioned
>
> At first I thought it might mean a Bayer array of 640*480*4 (RGGB)
> but that comes to 1280*960 effective color. I'm anxious to see what
> you get.
>
> Leo Taylor
>
>


[Non-text portions of this message have been removed]

---  "HelloBozos"  wrote:
>
> http://www.youtube.com/user/YoudSayOmg
>

If the moderator will indulge us for a moment.

Your video, Night of Fire !!! 09' has impressive jet cars and trucks going 1/4
mile. It reminded me of the evenings I'd sit and watch the F4E Phantoms I
serviced take off during the Vietnam Era.  I was stationed about 200 miles South
of you at Homestead AFB. The flames were similar, the acceleration was MUCH
slower, but the top speed was Mach 2.4. We had a variety of jets launch at night
at Khorat AB Thailand but none matched the flames of the F4 afterburners!

Leo Taylor

---  Darwin Teague  wrote:
>
> I ordered one of these tonight, so I'll be able to give a good review after
Christmas.
>
> http://www.optcorp.com/product.aspx?pid=13954&kw=PL-131C&st=2
>

I hope your new purchase works out well.

I can't correlate the specifications on the site you linked:

CoolAir 1.3 MP Color CMOS
Resolution: 1280 x 1024
Pixel Array: 640x480
Sensor Size: Not mentioned

At first I thought it might mean a Bayer array of 640*480*4 (RGGB) but that
comes to 1280*960 effective color. I'm anxious to see what you get.

Leo Taylor

---  "HelloBozos"  wrote:
>
> Marry Thanksgiving
>

Marry her? I hardly know her.

Your posts never fail to entertain.  Your photo of the two spaceships look fine.
When I saw a similar scene long ago I did not have a camera on hand. I have not
had a clear pass in a long time - missed the whole Shuttle-ISS docking this time
around.

Leo Taylor

Hiya Group, Long time no Track,but i did Thanksgiving Eve..Photo's in the Groups
Photo section...ISS an STS-129 Atlantis...was only a 1/2 sky pass till earth
shadow but amazonly i got both in after going handcontroler manual again,click
large or origianl size for best view,they were the only OK frames out 30-40
tries on each... i used a Nexstar8se,CanonG10,Afocal on 25mm lens,...settings
1/1000xiso400xf3.2xsingle frames each..one these times i'll try twisting the
25mmx7mm zoom lens up some,when i'm a pro, i'll add a x2 barlow an see
spacemen..heh...8^)..this link belows to the Animation i made:

http://my.wftv.com/_International-Space-Station-an-NASA-STS-129Undocked/photo/67\
66038/6696.html

     Enjoy!!,
         Bozo

http://www.youtube.com/user/YoudSayOmg

http://www.celestronimages.com/member.php?action=showprofile&user_id=2306

Hey Darwin,
The specs on it do look interesting, and the price is very good for what it will
do. I look forward to your review. Looks like great possibilty for me as well.
Thanks!

cs (let's hope soon!)

Jim



On Nov 26, 2009, at 7:29 PM, Darwin Teague <darwin-t@...> wrote:

I ordered one of these tonight, so I'll be able to give a good review after
Christmas.

http://www.optcorp.com/product.aspx?pid=13954&kw=PL-131C&st=2

I had good passes of the ISS and Shuttle last night and tonight, but it was
raining both times. No more good passes until 12-8.

At least it didn't clear up right after the passes. That REALLY ticks me
off when that happens.

I've got nothin' to do and all day to do it. I'm retired.
http://negligentdischarge.com
http://loadmastervideos.com
http://darwinsastroworld.com/




[Non-text portions of this message have been removed]

I ordered one of these tonight, so I'll be able to give a good review after
Christmas.

http://www.optcorp.com/product.aspx?pid=13954&kw=PL-131C&st=2

I had good passes of the ISS and Shuttle last night and tonight, but it was
raining both times. No more good passes until 12-8.

At least it didn't clear up right after the passes. That REALLY ticks me
off when that happens.


I've got  nothin' to do and all day to do it. I'm retired.
http://negligentdischarge.com
http://loadmastervideos.com
http://darwinsastroworld.com/

<Start building a spaceport now>

I regularly launch hybrid model rockets - does that count?

Presumably I just need to start 'scaling up', like using a gasoline fuel
tanker for the Nitrous Oxide, rather than the likes of a 'fizzy-drink maker'
CO2 cartridge, and maybe hundreds of old tyres, instead of compressed
dustbin-liners as the fuel !!!

I'll let you all know when I am ready for my first launch, although I would
suggest that you start trying to 'remote control' your imaging setups - so
that you can operate from the safety of a DEEP underground bunker !!!

Cheers,
Niall

I just looked back at the "size of ISS" thread and can see my "estimate" was off
by 3x. At first in my mind I was thinking it was "about" the size of Jupiter,
but then as I thought about the details I was seeing I "imagined" the size MUST
have been larger.

Another example why people make horrible eye-witnesses.
   ----- Original Message -----
   From: David J Rasmussen
   To: satellitetracker@yahoogroups.com
   Sent: Thursday, November 26, 2009 5:54 AM
   Subject: Re: [satellitetracker] Re: ISS and STS-129



   Visually you could definitely tell it was the ISS. I would estimate that the
size was 3x to 6x Jupiter for the pass (which rose to 66 deg).
   Compromise... compromise... gotta make it big enough to see details, but small
enough to keep within FOV for long enough to see the details. I could discern
the golden color solar panels straddling the brighter, whiter central modules.
As a point of reference, I could see 2 dark cloud bands on Jupiter with the same
eyepiece.

   I will keep the same eyepiece until I figure out the tracking thing more.
(John, Thanks for the link to the tips!)

   Good luck Friday... I will be in Big Bear, Ca camping (in our trailer) this
long weekend. I'm not sure I will bring my scope and computer to try again up
there with all the trees in the campground.

   regards, David

   ----- Original Message -----
   From: cory.tate
   To: djras@...
   Sent: Wednesday, November 25, 2009 9:56 PM
   Subject: Re: [satellitetracker] Re: ISS and STS-129

   Visually how clear could you see the station through your eyepiece? Would you
use a different one? I'm gearing up for a Friday pass.

   Thanks for any input,

   Cory

   [Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]

Visually you could definitely tell it was the ISS. I would estimate that the
size was 3x to 6x Jupiter for the pass (which rose to 66 deg).
Compromise... compromise... gotta make it big enough to see details, but small
enough to keep within FOV for long enough to see the details. I could discern
the golden color solar panels straddling the brighter, whiter central modules.
As a point of reference, I could see 2 dark cloud bands on Jupiter with the same
eyepiece.

I will keep the same eyepiece until I figure out the tracking thing more. (John,
Thanks for the link to the tips!)

Good luck Friday... I will be in Big Bear, Ca camping (in our trailer) this long
weekend. I'm not sure I will bring my scope and computer to try again up there
with all the trees in the campground.

regards, David


----- Original Message -----
   From: cory.tate
   To: djras@...
   Sent: Wednesday, November 25, 2009 9:56 PM
   Subject: Re: [satellitetracker] Re: ISS and STS-129


   Visually how clear could you see the station through your eyepiece? Would you
use a different one?  I'm gearing up for a Friday pass.



   Thanks for any input,

   Cory


[Non-text portions of this message have been removed]

----- Original Message ----

> From: Niall J. Saunders <niall@...>
>
> For me, the primary deal-breaker is that the ISS never gets much closer than
> about 700 miles, and never much above 25 degrees elevation. I have captured,
> hand-guiding my LX90 with Philips TouCam, the only images of the ISS that I
> will ever be likely to try capturing. You guys in the lower Latitudes should
> consider yourselves lucky - NASA obviously doesn't like us lot 'up here',
> north of 55 degrees !!!

It's not that, it's just a matter of using the most efficient orbit from the
launch site.  Launch sites are usually built as close to the equator as
possible, to take advantage of the free boost that the greater speed of earth's
rotation at lower latitudes provides.  Then the most efficient orbit from that
point is to launch due east, which puts the object in an orbit where the most
northern part of the orbit is at the same latitude that the object launched
from.  That's why even from here in the middle of the US, the Hubble barely
makes it above our southern horizon.

Since Russia was a major partner in building the ISS, it had to be put in an
orbit that was more accessible from their more northerly launch site.  So it can
pass overhead or even to the north as seem from the mid-US, but it still doesn't
go far enough north to be very visible from Scotland.

So the trick is if/when a successor to the ISS is built, make sure Scotland gets
involved!  Start building a spaceport now!

-John

Using SatTrack with an LX20GPS is frustrating because there's a significant lag
in the joystick corrections, and apparently the default value for "alignment
adjustment
increments" in the program settings is too low.  Here's a message from a few
months ago with some useful tips:

<http://tech.groups.yahoo.com/group/satellitetracker/message/5156>

-John




----- Original Message ----
> From: David J Rasmussen <djras@...>
>
> Tonight I got a grand view of ISS with STS 129 about 10 seconds behind.
> This was the first time I used Satellite Tracker with my Meade 8" LX200-GPS.
> What a wonderful experience and BOY!!! does that zip on by (especially when it
> got above 45 deg alt).
> An interesting thing was that I could still see the station illuminated by the
> moonlight.
>
> Only bad thing was that the scope seemed to be tracking a bit too slow (at the
> lower altitudes).
> After several seconds the ISS would drift in its direction of travel out of
the
> field of view of a 25mm eyepiece (2000mm fl scope).
> I would then Stop Tracking and the Start Tracking and ISS would be
re-centered.
>
> I also tried a USB game controller for joystick corrections and had no
noticable
> effect (but then I couldn't watch the eyepiece and the laptop screen at the
same
> time to see if the joystick was working at all).
>
> regards all,
> David
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Tonight I got a grand view of ISS with STS 129 about 10 seconds behind.
This was the first time I used Satellite Tracker with my Meade 8" LX200-GPS.
What a wonderful experience and BOY!!! does that zip on by (especially when it
got above 45 deg alt).
An interesting thing was that I could still see the station illuminated by the
moonlight.

Only bad thing was that the scope seemed to be tracking a bit too slow (at the
lower altitudes).
After several seconds the ISS would drift in its direction of travel out of the
field of view of a 25mm eyepiece (2000mm fl scope).
I would then Stop Tracking and the Start Tracking and ISS would be re-centered.

I also tried a USB game controller for joystick corrections and had no noticable
effect (but then I couldn't watch the eyepiece and the laptop screen at the same
time to see if the joystick was working at all).

regards all,
David

[Non-text portions of this message have been removed]

--- "Niall J. Saunders"  wrote:

>
> Another camera that has just hit the market is the Olympus PEN-1 - same deal,
high frame-speed HD video capability on a DSLR
>

Thank you for the suggestion. My wife bought her first Pentax K1000 SLR in the
early '90s and I bought her the first lens. We have only bought Pentax K-mount
lenses ever since. I would not want to start over with Olympus though my wife
once owned an OM-1.

>
> I have no recollection of any 'deal breakers', there may be some - but it
might be worth considering.
>

Do they watch,, "30 Rock" in Great Britain? I did not spot the, "Deal Breaker"
in the manual I downloaded. Fortunately another amateur astronomer mentioned to
me the K-x lacks 2 of 3 jacks found on my mid-range Pentax DSLRs.

>
> For me, the primary deal-breaker is that the ISS never gets much closer than
about 700 miles, and never much above 25 degrees elevation.
>

I've been to Edinburgh and Sterling. The sky was interesting, not the view I'm
used to. But alas, nothing new I can't see from Connecticut. I've never been
South further than the Florida Keys, not far enough to see some really new
objects.

Leo Taylor

Thanks Oz.  Have a great Thanksgiving holiday.

We'll be looking for the two spacecraft from
Santa Barabara tonight with the rest of the
family.  Then back in Diamond Bar Thursday night.

-Dennis

At 12:55 PM 11/24/2009, you wrote:
>
>
>Hi Dennis,
>
>i am signed up for calsky alerts, I just copied
>and pasted part of my email. I dont have any more data on this event.
>
>I am in Costa Mesa, CA (so-cal)
>
>Oz
>
>--- In
><mailto:satellitetracker%40yahoogroups.com>satellitetracker@yahoogroups.com,
>"David J Rasmussen" <djras@...> wrote:
> >
> > Schedule is:
> > Wednesday 1h53 PSTSTS-129Space Shuttle
> Atlantis (STS-129): ATLANTIS UNDOCKS FROM ISS
> > 2h18mSTS-129Space Shuttle Atlantis (STS-129):
> ATLANTIS FLYAROUND OF ISS BEGINS
> > 3h39mSTS-129Space Shuttle Atlantis (STS-129):
> ATLANTIS FINAL SEPARATION FROM ISS
> >
> >
> > ----- Original Message -----
> > From: Dennis Dinga
> > To:
> <mailto:satellitetracker%40yahoogroups.com>satellitetracker@yahoogroups.com
> > Sent: Monday, November 23, 2009 4:39 PM
> > Subject: Re: [satellitetracker] ISS Reboost on 11-24-09
> >
> >
> >
> > Oz- (off mail reflectror)
> >
> > Do I have this right?: There is a planned
> > re-boost at 2:07am PT or, 2 hours after midnight
> > tonight? Then hatch closure at 9:28 Tuesday morning?
> >
> > Two more questions:
> > Do you have the undocking timeline?
> >
> > Do you live in the So. Cal area?
> >
> > I'm looking forward to clear weather and a good
> > visual sighting of the separated Shuttle-ISS
> > constellation Wednesday night between 6:15
> > through 6:30pm PT. Exact times depend on changes in their Keps tomorrow.
> >
> > -Dennis Dinga
> > Diamond Bar, CA
> > 909-860-1515
> >
> > At 02:22 PM 11/23/2009, you wrote:
> > >
> > >
> > >Just a heads up on the ISS reboost (PST times below).
> > >
> > >Tuesday 24 November 2009 Time Object (Link) Event
> > >
> > >ISS REBOOST
> > >2h07m STS-129 Space Shuttle Atlantis (STS-129):
> > >
> > >ATLANTIS / ISS FAREWELL AND HATCH CLOSURE
> > >9h28m STS-129 Space Shuttle Atlantis (STS-129):
> > >
> > >Oz
> > >
> > >
> >
> > Dennis Dinga dennis@...
> > H: 909-860-1515 C: 951-313-5192
> > 1024 Twin Canyon, Diamond Bar, CA 91765
> > N6DD TRA 8427 L3
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>

Dennis Dinga    dennis@...
H: 909-860-1515  C: 951-313-5192
1024 Twin Canyon, Diamond Bar, CA 91765
N6DD      TRA 8427 L3

[Non-text portions of this message have been removed]

Very nice shot indeed!  Congratulations!

Eric

--- In satellitetracker@yahoogroups.com, "leotaylor2" <leotaylor@...> wrote:
>
> ---  "Ian"  wrote:
> >
> > Hi, it's a good time capture STS-129 docked to iss, I taken space shuttle
today with 254/1200 Newtonian, QHY5 camera on EQ6 at 5h35 pm. You can look my
album to see it.
> >
>
> Another good photo from Ian! I think I see the underside of the delta winged
shuttle up and left of the center of the ISS.
>
> Contrary to rumors we do have clear days in CT but they don't fall on  ISS
high passes.
>
> Leo Taylor
>

Hi Leo,

Another camera that has just hit the market is the Olympus PEN-1 - same
deal, high frame-speed HD video capability on a DSLR

Best fact is that you could contact Olympus who will send you a trial camera
FREE OF CHARGE if you can give them a valid reason why you think their new
'baby' might solve a photography issue for you. See an Olympus website for
details.

I have no recollection of any 'deal breakers', there may be some - but it
might be worth considering.

For me, the primary deal-breaker is that the ISS never gets much closer than
about 700 miles, and never much above 25 degrees elevation. I have captured,
hand-guiding my LX90 with Philips TouCam, the only images of the ISS that I
will ever be likely to try capturing. You guys in the lower Latitudes should
consider yourselves lucky - NASA obviously doesn't like us lot 'up here',
north of 55 degrees !!!

Cheers,
Niall Saunders
Clinterty Observatories
Aberdeen, SCOTLAND

   _____

From: satellitetracker@yahoogroups.com
[mailto:satellitetracker@yahoogroups.com] On Behalf Of leotaylor2
Sent: 24 November 2009 18:00
To: satellitetracker@yahoogroups.com
Subject: [satellitetracker] Camera Search




I almost bought a camera this coming weekend. A fellow on Pentax Forums said
the new entry level DSLR K-x with CMOS sensor had much lower noise than the
CCD cameras I own. It also had Live View which helps focusing astrophotos.
And it has 25 FPS "HD Video" which would do Satellites. The video is
1280*720 (16:9) which is 2 times the width and 1.5 times the height of my
ToUcam. Even better, he believes the video uses the complete width of the
24mm wide 12 MP sensor. The sensor is the same APS-C size as my DSLRs but
twice my 6 MP. This means smallish pixels.

So why won't I buy it? There are two little irritations (no power jack,
can't turn off NR above 30 sec) and one Deal Breaker: No external shutter
control jack! Every Pentax DSLR and SLR have external shutter control.
Without it you can't do serious astro. It does support the IR remote but I
looked inside my IR unit and there is no way to connect it to my existing
shutter cables.

So for the lack of a little jack I lost out on what could have been a good
ISS imaging DSLR! It's too expensive for just Satellite Tracking but if it
could do my other astrophotography I'd be happy.

Leo Taylor






[Non-text portions of this message have been removed]

Hi Dennis,

i am signed up for calsky alerts, I just copied and pasted part of my email. I
dont have any more data on this event.

I am in Costa Mesa, CA (so-cal)

Oz

--- In satellitetracker@yahoogroups.com, "David J Rasmussen" <djras@...> wrote:
>
> Schedule is:
> Wednesday 1h53 PSTSTS-129Space Shuttle Atlantis (STS-129): ATLANTIS UNDOCKS
FROM ISS
>  2h18mSTS-129Space Shuttle Atlantis (STS-129): ATLANTIS FLYAROUND OF ISS
BEGINS
> 3h39mSTS-129Space Shuttle Atlantis (STS-129): ATLANTIS FINAL SEPARATION FROM
ISS
>
>
>   ----- Original Message -----
>   From: Dennis Dinga
>   To: satellitetracker@yahoogroups.com
>   Sent: Monday, November 23, 2009 4:39 PM
>   Subject: Re: [satellitetracker] ISS Reboost on 11-24-09
>
>
>
>   Oz- (off mail reflectror)
>
>   Do I have this right?: There is a planned
>   re-boost at 2:07am PT or, 2 hours after midnight
>   tonight? Then hatch closure at 9:28 Tuesday morning?
>
>   Two more questions:
>   Do you have the undocking timeline?
>
>   Do you live in the So. Cal area?
>
>   I'm looking forward to clear weather and a good
>   visual sighting of the separated Shuttle-ISS
>   constellation Wednesday night between 6:15
>   through 6:30pm PT. Exact times depend on changes in their Keps tomorrow.
>
>   -Dennis Dinga
>   Diamond Bar, CA
>   909-860-1515
>
>   At 02:22 PM 11/23/2009, you wrote:
>   >
>   >
>   >Just a heads up on the ISS reboost (PST times below).
>   >
>   >Tuesday 24 November 2009 Time Object (Link) Event
>   >
>   >ISS REBOOST
>   >2h07m STS-129 Space Shuttle Atlantis (STS-129):
>   >
>   >ATLANTIS / ISS FAREWELL AND HATCH CLOSURE
>   >9h28m STS-129 Space Shuttle Atlantis (STS-129):
>   >
>   >Oz
>   >
>   >
>
>   Dennis Dinga dennis@...
>   H: 909-860-1515 C: 951-313-5192
>   1024 Twin Canyon, Diamond Bar, CA 91765
>   N6DD TRA 8427 L3
>
>   [Non-text portions of this message have been removed]
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

I almost bought a camera this coming weekend. A fellow on Pentax Forums said the
new entry level DSLR K-x with CMOS sensor had much lower noise than the CCD
cameras I own. It also had Live View which helps focusing astrophotos. And it
has 25 FPS "HD Video" which would do Satellites. The video is 1280*720 (16:9)
which is 2 times the width and 1.5 times the height of my ToUcam. Even better,
he believes the video uses the complete width of the 24mm wide 12 MP sensor. The
sensor is the same APS-C size as my DSLRs but twice my 6 MP. This means smallish
pixels.

So why won't I buy it?  There are two little irritations (no power jack, can't
turn off NR above 30 sec) and one Deal Breaker: No external shutter control
jack! Every Pentax DSLR and SLR have external shutter control. Without it you
can't do serious astro. It does support the IR remote but I looked inside my IR
unit and there is no way to connect it to my existing shutter cables.

So for the lack of a little jack I lost out on what could have been a good ISS
imaging DSLR! It's too expensive for just Satellite Tracking but if it could do
my other astrophotography I'd be happy.

Leo Taylor

---  "Ian"  wrote:
>
> Hi, it's a good time capture STS-129 docked to iss, I taken space shuttle
today with 254/1200 Newtonian, QHY5 camera on EQ6 at 5h35 pm. You can look my
album to see it.
>

Another good photo from Ian! I think I see the underside of the delta winged
shuttle up and left of the center of the ISS.

Contrary to rumors we do have clear days in CT but they don't fall on  ISS high
passes.

Leo Taylor

Schedule is:
Wednesday 1h53 PSTSTS-129Space Shuttle Atlantis (STS-129): ATLANTIS UNDOCKS FROM
ISS
  2h18mSTS-129Space Shuttle Atlantis (STS-129): ATLANTIS FLYAROUND OF ISS BEGINS
3h39mSTS-129Space Shuttle Atlantis (STS-129): ATLANTIS FINAL SEPARATION FROM ISS


   ----- Original Message -----
   From: Dennis Dinga
   To: satellitetracker@yahoogroups.com
   Sent: Monday, November 23, 2009 4:39 PM
   Subject: Re: [satellitetracker] ISS Reboost on 11-24-09



   Oz- (off mail reflectror)

   Do I have this right?: There is a planned
   re-boost at 2:07am PT or, 2 hours after midnight
   tonight? Then hatch closure at 9:28 Tuesday morning?

   Two more questions:
   Do you have the undocking timeline?

   Do you live in the So. Cal area?

   I'm looking forward to clear weather and a good
   visual sighting of the separated Shuttle-ISS
   constellation Wednesday night between 6:15
   through 6:30pm PT. Exact times depend on changes in their Keps tomorrow.

   -Dennis Dinga
   Diamond Bar, CA
   909-860-1515

   At 02:22 PM 11/23/2009, you wrote:
   >
   >
   >Just a heads up on the ISS reboost (PST times below).
   >
   >Tuesday 24 November 2009 Time Object (Link) Event
   >
   >ISS REBOOST
   >2h07m STS-129 Space Shuttle Atlantis (STS-129):
   >
   >ATLANTIS / ISS FAREWELL AND HATCH CLOSURE
   >9h28m STS-129 Space Shuttle Atlantis (STS-129):
   >
   >Oz
   >
   >

   Dennis Dinga dennis@...
   H: 909-860-1515 C: 951-313-5192
   1024 Twin Canyon, Diamond Bar, CA 91765
   N6DD TRA 8427 L3

   [Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]

----- Original Message ----

> From: autostaretx <rseymour@...>
>
> --- In satellitetracker@yahoogroups.com, John Mahony wrote:
> >
> > I've often wondered what dpi really means for digital images, where
> > the size on screen will depend on your monitor and your display
> > settings.  I think it's really an old term more important in the
> > print business.  At the local observatory we sometimes get some
> > press coverage and when I offer to send them relevant images,
> > I have twice been told to send them with a certain dpi, which is
> > silly because it seems to be an artificial concept for digital
> > images, easily changed with no actual effect on the digital image
> > data, in any image processing program.
>
> No, it's *not* silly for the press folks to request that -you-
> create the image at a certain dpi sizing.
> That lets -you- control any image artifacts (such as Moire')
> that might be introduced by shrinking/enlarging the image.

How?  it's just a number attached to the file that doesn't affect the image
data.
If they decide the image is too big and they scale it down, that could induce
Moire', and I have no control over that, unless they tell me in advance how big
they want the image.

-John

> Press releases are intended for -printing-.
> And ink-to-paper presses still use dot grids as their final "plate",
> and those grids are at (typically) 110 lpi for low-res newsprint,
> 150 lpi for magazines, and 200 lpi for pretty travel brochures.
>
> Note i said "lpi" (lines per inch), which is the real press business
> unit of measure.  To avoid nasty effects, you want the submitted
> image to be at -double- the lpi (so a 300 dpi laser printer is
> not fully adequate for a 200 lpi Kodak-printed brochure).
>
> have fun
> --dick
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

----- Original Message ----

> From: jimmyjujames <jimmy_an@...>
>
>

> What is the correct width of the ISS?


Since it's grown over the years, the number will vary depending on how updated
the source is.

-John


> These sites say the ISS width is 108.5 meters (356 feet)
>
> http://iss.jaxa.jp/kids/en/station/03.html
>
> Page 2 says 108 m
>
> http://www.spaceflight.esa.int/users/downloads/factsheets/fs001_12_iss.pdf
>
>
>
> These sites say the ISS width is 73.3 meters (240 feet)
>
> http://www.daviddarling.info/images/ISS_747_comparison.gif
>
> http://www.spaceflight.nasa.gov/feedback/search/search.cgi
>
>
> This one says 80 meters wide
>
> http://images.spaceref.com/news/2006/Itokawa.vs.ISS.jpg
>
> http://farm4.static.flickr.com/3140/3068000185_e01fa20d34.jpg
>
>
> This site has pdf's of each module.
> Click the drawing # to view pdf
>
> http://www.nasa.gov/mission_pages/station/multimedia/scalemodel/index.html
>
> jimmy
>
>
> --- In satellitetracker@yahoogroups.com, "tegwilym" wrote:
> >
> > ...or compared with something familiar-
> >
> http://www.daviddarling.info/images/ISS_747_comparison.gif
> > Just for fun, here are some non-technical comparisons.
> >
> >
> > With an asteroid -
> http://images.spaceref.com/news/2006/Itokawa.vs.ISS.jpg
> >
> > The station we should have seen in 2001!  (Ha!)
> >
>
http://1.bp.blogspot.com/_zJBQQ1qXfEo/R7MThzgEgqI/AAAAAAAAAE0/-PSeFLOxekA/s400/T\
heFuture.jpg
> >
> > ...and compared with some of our favorite starships -
> >
> http://farm4.static.flickr.com/3140/3068000185_e01fa20d34.jpg
> >
> > Tom
> >
> > --- In satellitetracker@yahoogroups.com, "jimmyjujames" wrote:
> > >
> > >
> > > StarryNight reported sizes
> > >
> > > Moon 1800 arcsec = 30 arcmin = 0.5 degrees
> > > Jupiter 39 arcsec
> > > Saturn 17 arcsec
> > > Venus 10 arcsec
> > > Mars 9 arcsec
> > >
> > > How wide is the ISS?
> > > Completed ISS is 108.5 x 72.8 meters (356 x 239 feet)
> > > I used 356 feet for the below calculations.
> > >
> > > Here are my spreadsheet calculations.
> > >
> > > Elevation above the horizon
> > > At 90 degrees overhead the ISS is 65 arcsec
> > > At 35 degrees the ISS is 39 arcsec about the size of Jupiter
> > > At 10 degrees the ISS is 17 arcsec about the size of Saturn
> > > At 0 degrees on the horizon the ISS is 11 arcsec about the size of Venus
> > >
> > > The above ISS arcsec are maximums and will probably be less in reality due
> to ISS rotation and viewing from side.
> > >
> > > I have a 10" Newtonian FL=1200, F4.7
> > > My ToUcam840 FOV seems to be about the same as a 4mm eyepiece
> > > Therefore
> > > ToUcam840 has a FOV of about 600 arcsec
> > > ToUcam840 with a 2x Barlow has a FOV of about 300 arcsec
> > >
> > > jimmy
> > >
> >
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

----- Original Message ----

> From: Chris Peterson <cpeterson@...>
>
> I prepare lots of material for print, and many publishers don't really seem
> to understand the relationship between DPI and image size. I agree with you
> completely that a DPI spec makes good sense- if properly given. But an awful
> lot of the publishers I work with simply request images with a given DPI,
> but no specification of image size. That makes no sense at all.

Exactly.  DPI by itself is just a number attached to a digital file telling the
printer what scale to use when printing it.  If the local newspaper doesn't tell
me what _size_ they want the final image to be, I'm not sure what to do.  One
image I had came from a newer DSLR, about 2400X3000 pixels.  I can arbitrarily
tell the processing software to set dpi to 300, and that has no effect on the
image data, but it means it would print about 8"X10".  Does the newspaper want
to print an image that size?  I have no idea- they didn't give me that info.  So
if I just do that- set the dpi to 300, and they decide it's too big, will they
crop it?  Resize it?

-John


> It's been a while since I worked with a printer who cared about LPI. Most
> now use DPI as their native unit of resolution, and specify what they want,
> so there is no need for me to worry about their screen technology or any
> other details in order to create an image with the necessary resolution for
> their process.
>
> Chris
>
> *****************************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
>
> ----- Original Message -----
> From: "autostaretx"
> To:
> Sent: Monday, November 23, 2009 9:33 AM
> Subject: [satellitetracker] Re: How big is the ISS
>
>
> > No, it's *not* silly for the press folks to request that -you-
> > create the image at a certain dpi sizing.
> > That lets -you- control any image artifacts (such as Moire')
> > that might be introduced by shrinking/enlarging the image.
> > Press releases are intended for -printing-.
> > And ink-to-paper presses still use dot grids as their final "plate",
> > and those grids are at (typically) 110 lpi for low-res newsprint,
> > 150 lpi for magazines, and 200 lpi for pretty travel brochures.
> >
> > Note i said "lpi" (lines per inch), which is the real press business
> > unit of measure.  To avoid nasty effects, you want the submitted
> > image to be at -double- the lpi (so a 300 dpi laser printer is
> > not fully adequate for a 200 lpi Kodak-printed brochure).
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Hi, it's a good time capture STS-129 docked to iss, I taken space shuttle today
with 254/1200 Newtonian, QHY5 camera on EQ6 at 5h35 pm. You can look my album to
see it.

Oz-  (off mail reflectror)

Do I have this right?: There is a planned
re-boost at 2:07am PT or, 2 hours after midnight
tonight?  Then hatch closure at 9:28 Tuesday morning?

Two more questions:
Do you have the undocking timeline?

Do you live in the So. Cal area?

I'm looking forward to clear weather and a good
visual sighting of the separated Shuttle-ISS
constellation Wednesday night between 6:15
through 6:30pm PT.  Exact times depend on changes in their Keps tomorrow.

-Dennis Dinga
Diamond Bar, CA
909-860-1515


At 02:22 PM 11/23/2009, you wrote:
>
>
>Just a heads up on the ISS reboost (PST times below).
>
>Tuesday 24 November 2009 Time Object (Link) Event
>
>ISS REBOOST
>2h07m STS-129 Space Shuttle Atlantis (STS-129):
>
>ATLANTIS / ISS FAREWELL AND HATCH CLOSURE
>9h28m STS-129 Space Shuttle Atlantis (STS-129):
>
>Oz
>
>

Dennis Dinga    dennis@...
H: 909-860-1515  C: 951-313-5192
1024 Twin Canyon, Diamond Bar, CA 91765
N6DD      TRA 8427 L3

[Non-text portions of this message have been removed]

Just a heads up on the ISS reboost (PST times below).

Tuesday 24 November 2009 Time Object (Link) Event

ISS REBOOST
  2h07m STS-129 Space Shuttle Atlantis (STS-129):

ATLANTIS / ISS FAREWELL AND HATCH CLOSURE
  9h28m STS-129 Space Shuttle Atlantis (STS-129):

Oz

Thanks for the ISS comparison images.

I now see contradictions in the final width of the ISS.
What is the correct width of the ISS?


These sites say the ISS width is 108.5 meters (356 feet)

http://iss.jaxa.jp/kids/en/station/03.html

Page 2 says 108 m

http://www.spaceflight.esa.int/users/downloads/factsheets/fs001_12_iss.pdf



These sites say the ISS width is 73.3 meters (240 feet)

http://www.daviddarling.info/images/ISS_747_comparison.gif

http://www.spaceflight.nasa.gov/feedback/search/search.cgi


This one says 80 meters wide

http://images.spaceref.com/news/2006/Itokawa.vs.ISS.jpg

http://farm4.static.flickr.com/3140/3068000185_e01fa20d34.jpg


This site has pdf's of each module.
Click the drawing # to view pdf

http://www.nasa.gov/mission_pages/station/multimedia/scalemodel/index.html

jimmy


--- In satellitetracker@yahoogroups.com, "tegwilym" <tegwilym@...> wrote:
>
> ...or compared with something familiar-
>
http://www.daviddarling.info/images/ISS_747_comparison.gif
> Just for fun, here are some non-technical comparisons.
>
>
> With an asteroid -
http://images.spaceref.com/news/2006/Itokawa.vs.ISS.jpg
>
> The station we should have seen in 2001!  (Ha!)
>
http://1.bp.blogspot.com/_zJBQQ1qXfEo/R7MThzgEgqI/AAAAAAAAAE0/-PSeFLOxekA/s400/T\
heFuture.jpg
>
> ...and compared with some of our favorite starships -
>
http://farm4.static.flickr.com/3140/3068000185_e01fa20d34.jpg
>
> Tom
>
> --- In satellitetracker@yahoogroups.com, "jimmyjujames" <jimmy_an@> wrote:
> >
> >
> > StarryNight reported sizes
> >
> > Moon 1800 arcsec = 30 arcmin = 0.5 degrees
> > Jupiter 39 arcsec
> > Saturn 17 arcsec
> > Venus 10 arcsec
> > Mars 9 arcsec
> >
> > How wide is the ISS?
> > Completed ISS is 108.5 x 72.8 meters (356 x 239 feet)
> > I used 356 feet for the below calculations.
> >
> > Here are my spreadsheet calculations.
> >
> > Elevation above the horizon
> > At 90 degrees overhead the ISS is 65 arcsec
> > At 35 degrees the ISS is 39 arcsec about the size of Jupiter
> > At 10 degrees the ISS is 17 arcsec about the size of Saturn
> > At 0 degrees on the horizon the ISS is 11 arcsec about the size of Venus
> >
> > The above ISS arcsec are maximums and will probably be less in reality due
to ISS rotation and viewing from side.
> >
> > I have a 10" Newtonian FL=1200, F4.7
> > My ToUcam840 FOV seems to be about the same as a 4mm eyepiece
> > Therefore
> > ToUcam840 has a FOV of about 600 arcsec
> > ToUcam840 with a 2x Barlow has a FOV of about 300 arcsec
> >
> > jimmy
> >
>

I prepare lots of material for print, and many publishers don't really seem
to understand the relationship between DPI and image size. I agree with you
completely that a DPI spec makes good sense- if properly given. But an awful
lot of the publishers I work with simply request images with a given DPI,
but no specification of image size. That makes no sense at all.

It's been a while since I worked with a printer who cared about LPI. Most
now use DPI as their native unit of resolution, and specify what they want,
so there is no need for me to worry about their screen technology or any
other details in order to create an image with the necessary resolution for
their process.

Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com


----- Original Message -----
From: "autostaretx" <rseymour@...>
To: <satellitetracker@yahoogroups.com>
Sent: Monday, November 23, 2009 9:33 AM
Subject: [satellitetracker] Re: How big is the ISS


> No, it's *not* silly for the press folks to request that -you-
> create the image at a certain dpi sizing.
> That lets -you- control any image artifacts (such as Moire')
> that might be introduced by shrinking/enlarging the image.
> Press releases are intended for -printing-.
> And ink-to-paper presses still use dot grids as their final "plate",
> and those grids are at (typically) 110 lpi for low-res newsprint,
> 150 lpi for magazines, and 200 lpi for pretty travel brochures.
>
> Note i said "lpi" (lines per inch), which is the real press business
> unit of measure.  To avoid nasty effects, you want the submitted
> image to be at -double- the lpi (so a 300 dpi laser printer is
> not fully adequate for a 200 lpi Kodak-printed brochure).

--- In satellitetracker@yahoogroups.com, John Mahony <jmmahony@...> wrote:
>
> I've often wondered what dpi really means for digital images, where
> the size on screen will depend on your monitor and your display
> settings.  I think it's really an old term more important in the
> print business.  At the local observatory we sometimes get some
> press coverage and when I offer to send them relevant images,
> I have twice been told to send them with a certain dpi, which is
> silly because it seems to be an artificial concept for digital
> images, easily changed with no actual effect on the digital image
> data, in any image processing program.

No, it's *not* silly for the press folks to request that -you-
create the image at a certain dpi sizing.
That lets -you- control any image artifacts (such as Moire')
that might be introduced by shrinking/enlarging the image.
Press releases are intended for -printing-.
And ink-to-paper presses still use dot grids as their final "plate",
and those grids are at (typically) 110 lpi for low-res newsprint,
150 lpi for magazines, and 200 lpi for pretty travel brochures.

Note i said "lpi" (lines per inch), which is the real press business
unit of measure.  To avoid nasty effects, you want the submitted
image to be at -double- the lpi (so a 300 dpi laser printer is
not fully adequate for a 200 lpi Kodak-printed brochure).

have fun
--dick