Search the web
Sign In
New User? Sign Up
Astroimaging_filters · Astroimaging Filters
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Hear how Yahoo! Groups has changed the lives of others. Take me there.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
Messages 986 - 1015 of 2070   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date ^
986
Hello People, I just found this group whilst googling filters, so I hope you don't mind if I pop in and ask some questions? I shoot film through a Meade SCT...
Radar
raydarastroboy
Offline Send Email
Oct 3, 2005
3:46 pm
987
Have have seen some very nice images done through higher transmition color filters on hypered tech pan and put together in a similar fashion to ccd images, and...
kevinbm13
Offline Send Email
Oct 4, 2005
12:30 am
988
I have noted in other forums folks posting web cam images enhanced with IR pass filtering. I was curious first, how the filter does this. By reducing seeing ...
kevinbm13
Offline Send Email
Oct 5, 2005
2:14 pm
989
Hi, Kevin, I now make the Schuler filters and the IR72 filter would be ideal for getting the detail for Mars and then using the RGB from a webcam to colorize...
Don Goldman
donclearview
Offline Send Email
Oct 5, 2005
4:29 pm
990
Hi Kevin... The IR filter you described will work fine on Mars (Jupiter is relly great in the IR). Only caution is that you will need to keep your exposures...
Brian Colville
mapleridgeobs
Offline Send Email
Oct 5, 2005
5:13 pm
991
Thanks guys, I suppose I now have a use for this filter. I actually wouldn't use it with a web cam at least at first but rather an ST7XME. I needed a way to...
kevinbm13
Offline Send Email
Oct 5, 2005
9:22 pm
992
Kevin, Brian brings up a great point. The additional contrast you get with the NIR filter for Jupiter is due to methane, which occurs between 800 and 900 nm....
Don Goldman
donclearview
Offline Send Email
Oct 5, 2005
10:28 pm
993
... order. ... back ... Astronomik's ... Kevin, I recently purchased an Astronomik Filter Holder and one each of the 1.25" and 2" drawers. I am very pleased...
davidflee002
Offline Send Email
Oct 6, 2005
1:39 am
994
Hi Don... The near IR stuff we can use with the sensors available on the amateur market pass a lot of interesting stuff in the 800-100nm range. Most of the...
Brian Colville
mapleridgeobs
Offline Send Email
Oct 7, 2005
5:56 pm
995
I am going to try using Don's I series LRGB filters and a Baader IRPass filter on Mars, and want to increase the focal length of my system from its native...
Mark Manner
mmanner
Offline Send Email
Oct 9, 2005
5:21 pm
996
I have now read that the TV powermates don't exhibit much in the way of amplification change when using different spacing. Unless others have contrary...
Mark Manner
mmanner
Offline Send Email
Oct 10, 2005
2:00 am
997
I seem to recall that TV publishes magnification vs spacing charts for their Barlows and Powermates. Perhaps you can check their website. Nevertheless that's...
Samir Kharusi
samirkharusi
Offline Send Email
Oct 10, 2005
8:11 am
998
Thanks, Samir. That is helpful info. Mark...
Mark Manner
mmanner
Offline Send Email
Oct 10, 2005
11:04 am
999
Mark: You can see the spacing at this site. http://www.televue.com/engine/page.asp?ID=42- Regards, Eric. (México) -- In Astroimaging_filters@yahoogroups.com,...
Eric Roel
eroelmx
Offline Send Email
Oct 10, 2005
2:03 pm
1000
it's that time of year again: the Fisherman's Wharf area in San Francisco has the Dungeness harvest beginning and in the wee hours of the morning we see the...
rdcrisp
Offline Send Email
Oct 17, 2005
1:02 am
1001
That's cool! Tom Davis Inkom,ID ... of ... of ... ways ... Halpha ... that ... are...
tvdavisid
Offline Send Email
Oct 18, 2005
8:25 pm
1002
Most informative, Richard! Thanks. Jim ... of ... of ... Halpha ... that ... are...
Jim Ferreira
oldfrankland
Offline Send Email
Oct 19, 2005
5:40 pm
1003
I have a basic question about imaging with filters and creating a color image. When using rgb filters, and combining them in Photoshop, the image comes out...
Mark Manner
mmanner
Offline Send Email
Oct 20, 2005
9:28 pm
1004
It looks unnatural as it is. The reason it looks that way, is that the you are arbitrarily assigning those very narrow wavelengths as red,green,blue, so the...
kevinbm13
Offline Send Email
Oct 21, 2005
12:59 am
1005
Kevin, thanks. You are getting at my question. I guess it is simply a color balance issue as you say. Mark ... image ... is ... seem ... Red...
Mark Manner
mmanner
Offline Send Email
Oct 21, 2005
2:02 pm
1006
I think you actually have a good understanding of it by what you said. Now I'm going to ramble on like I always do. Feel free to stop reading :) You're not...
Duane
duanedeal
Offline Send Email
Oct 26, 2005
12:37 am
1007
Hi all, I would like to send you my latest image of mars. Our new Astronomik Pro Planet IR 742 was used for this image. CS Gerd [Non-text portions of this...
Gerd Neumann
gneujr
Offline Send Email
Oct 26, 2005
8:02 am
1008
Hi all, after some processing I´m happy to show the image from the posting before now in a color version: The attached image is a LRGB. The L part has imaged ...
Gerd Neumann
gneujr
Offline Send Email
Oct 26, 2005
9:56 am
1009
Hi all, after some processing I´m happy to show the image from the posting before now in a color version: The attached image is a LRGB. The L part has imaged ...
Gerd Neumann
gneujr
Offline Send Email
Oct 26, 2005
10:48 am
1010
Below is a link to an image of Mars at around 2am CDT (7 UT) this morning, October 29. The yellow dust storm everyone is talking about has just rotated into...
Mark Manner
mmanner
Offline Send Email
Oct 30, 2005
12:29 am
1011
Hi Mark, Great image. I see you are using a manual Atik Filterwheel. Does manually rotate the Filterwheel mean a significant force ? due to the stops it has or...
Rainer
rsbfoto
Offline Send Email
Oct 30, 2005
1:14 am
1012
Hi Rainer, thanks for the comment. The Atik wheel moves relatively smoothly once you get a bit of practice with it. It has a plastic or nylon bearing that the...
Mark Manner
mmanner
Offline Send Email
Oct 30, 2005
2:43 am
1013
Great image and work with the IR Pass. I have yet to get out and give mine a whirl. I was worried it would be to much of a light reduction for any smaller...
kevinbm13
Offline Send Email
Oct 30, 2005
7:11 pm
1014
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Astroimaging_filters group. File :...
Astroimaging_filters@...
Send Email
Oct 30, 2005
7:32 pm
1015
Hi: In the 1014 message (former one), I posted a mosaic of Mars images, most of them including the last 2 taken with the Baader IR/pass filter. The other color...
Eric Roel
eroelmx
Offline Send Email
Oct 30, 2005
7:38 pm
Messages 986 - 1015 of 2070   Oldest  |  < Older  |  Newer >  |  Newest
Advanced
Add to My Yahoo!      XML What's This?

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help