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  • Members: 551
  • Category: Astrophotography
  • Founded: Mar 12, 2007
  • Language: English
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Messages 11335 - 11364 of 12252   Oldest  |  < Older  |  Newer >  |  Newest
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11335 Wolfgang Promper
ic2779 Send Email
Jun 29, 2012
9:36 am
Thank you very much for all the nice comments, Tim, John, Richard, Floyd, Hartmut, and Gordon. The Image I was reffering to is here:...
11336 Paul Beskeen
coldwetandcl... Send Email
Jun 29, 2012
10:06 am
Apologies for the unseasonal M42. Processing to get the look I was after took a few iterations + other distractions. Always the student and never the master! ...
11337 Jose M. Bellas
bustedlx Send Email
Jun 29, 2012
10:40 am
Paul, I like your M42 a lot. You have a lot of detail there and the narrowband really helps bring it out. Thanks for sharing. Clear skies, Jose M. Bellas ...
11338 Richard Crisp
rdcrisp Send Email
Jun 29, 2012
2:41 pm
See comment below From: FLI_Imaging_Systems@yahoogroups.com [mailto:FLI_Imaging_Systems@yahoogroups.com] On Behalf Of Wolfgang Promper Thank you very much for...
11339 Richard Crisp
rdcrisp Send Email
Jun 30, 2012
6:11 am
I am finally getting done something I’ve been meaning to do for some time. One is to look into this business about F/number and whether or not it has an...
11340 andrew950222 Send Email Jul 1, 2012
9:01 am
Hi Richard - Very good work well explained. If my understanding is correct you have verified what one would have expected from theory, which is in my view a...
11341 dvjbaja Send Email Jul 1, 2012
9:05 am
..... I had just characterized and a Pentax 67 400mm f/4 EDIF lens and a standard resolution test target. I took images of varying exposures at F/4, F/8, F/16...
11342 outters nicolas
golfdemornex Send Email
Jul 1, 2012
9:05 am
Hello Floyd, Yes for all, you can exchange the filter wheel between old CFW-7 and new CWF-2-7 and also the distance to the chip is exactly the same. I have an...
11343 mik.schuster Send Email Jul 1, 2012
9:10 am
Richard, your PTCs seem to show that dark current noise per pixel stays the same. Am I reading this correctly? Mile...
11344 John Nassr
jnassr2010 Send Email
Jul 1, 2012
9:10 am
Richard, Your "Big Enchilada" is masterfully executed and sheds clear light on related topics that have often been grist for heated squabbles in the past. Your...
11345 dannysperry Send Email Jul 1, 2012
9:10 am
Thanks, Wolfgang!...
11346 Richard Crisp
rdcrisp Send Email
Jul 1, 2012
11:00 am
Thanks John. It was fun putting it together and a lot of work of course…. But a labor of love. I added quite a bit relating to bright skies and show how that...
11347 Richard Crisp
rdcrisp Send Email
Jul 1, 2012
11:10 am
No There is no time dimension…. It just shows the relationship between signal level and noise… it says nothing about how long it takes to get to a...
11348 John Nassr
jnassr2010 Send Email
Jul 1, 2012
4:35 pm
Richard, The later version is even more relevant with everything being tied in to actual astroimaging and light pollution. Your meticulous labor of love is...
11349 Richard Crisp
rdcrisp Send Email
Jul 1, 2012
9:13 pm
From: FLI_Imaging_Systems@yahoogroups.com [mailto:FLI_Imaging_Systems@yahoogroups.com] On Behalf Of andrew950222 Sent: Saturday, June 30, 2012 3:34 AM To:...
11350 bakersfieldbiker
bakersfieldb... Send Email
Jul 1, 2012
9:13 pm
Thank you Nicolas, that answers my questions! I have a Homeyer custom OAG coming that was made for the CFW-7 and the IMG-6303 and was hoping it would work with...
11351 Richard Crisp
rdcrisp Send Email
Jul 1, 2012
9:15 pm
John It really doesn’t matter how you reach the F/#, it is the ratio of the aperture to the focal length…. A large aperture (12” f/3) has the same light...
11352 Richard Crisp
rdcrisp Send Email
Jul 1, 2012
9:15 pm
The classic PTC or DTC plots noise against signal level. For noise components caused by dark current there are two basic types: dark fixed pattern noise and...
11353 dvjbaja Send Email Jul 4, 2012
5:09 am
... http://img221.imageshack.us/img221/9969/rcw114.jpg A faint and obscure SNR: RCW 114 4 segment mosaic 7.5 hours each segment 5nm Ha FSQ Proline16803 ...
11354 Richard Crisp
rdcrisp Send Email
Jul 4, 2012
7:36 am
I sure like that one John…. Very nice SNR… I can sure appreciate the importance of dark skies and low read noise after going through that S/N analysis… ...
11355 dvjbaja Send Email Jul 5, 2012
5:13 am
Thank you Richard! The site in Coonabarabran can be quite excellent. Marco Lorenzi is a few klicks up the road who is getting outstanding color reslts as...
11356 Jose M. Bellas
bustedlx Send Email
Jul 5, 2012
5:13 am
John, Wow, thanks for sharing. I really like this. Clear skies, Jose M. Bellas jose@... 305-733-0055...
11357 rdcrisp@...
rdcrisp Send Email
Jul 6, 2012
5:13 am
this is the main reason why it is so hard to find decent sensors for astro use for a good price.... ...
11358 Sam Barziza
b52ceti Send Email
Jul 6, 2012
5:13 am
So are CCDs going the way of the dinosaur ? To be replaced with charge domain CMOS TD if possible ? Sam From: ccd-imaging-technology@yahoogroups.com ...
11359 rdcrisp@...
rdcrisp Send Email
Jul 6, 2012
5:13 am
I didn’t say that and neither did the author... but the commercial semiconductor industry usually focuses on volume opportunities: be it unit volume or $$$...
11360 Wolfgang Promper
ic2779 Send Email
Jul 6, 2012
6:27 am
Hello John It looks great. It is something only you can do, you got the touch for Ha. Wolfgang From: dvjbaja Sent: Wednesday, July 04, 2012 5:09 AM To:...
11361 rdcrisp@...
rdcrisp Send Email
Jul 7, 2012
8:43 pm
very nice video. thanks to Jim Janesick for sending me the link last night http://bit.ly/edlemail What an amazing set of challenges and such a nice engineering...
11362 rdcrisp@...
rdcrisp Send Email
Jul 8, 2012
11:00 am
approx 184 Megapixels full rez: 23096 x 7981 pixels (width x height) http://photojournal.jpl.nasa.gov/jpeg/PIA15689.jpg...
11363 Sam Barziza
b52ceti Send Email
Jul 8, 2012
9:47 pm
Can't view image. Can you repost the link ? Sam From: FLI_Imaging_Systems@yahoogroups.com [mailto:FLI_Imaging_Systems@yahoogroups.com] On Behalf Of ...
11364 drprovi57 Send Email Jul 10, 2012
1:16 pm
Hi Richard, I clearly if these pull this off - perhaps Star Wars may have actually worked :-) Many of is in the autonomous robotic space are watching this very...
Messages 11335 - 11364 of 12252   Oldest  |  < Older  |  Newer >  |  Newest
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