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Light Polution Filters - Which?

Started by SJJindra, 04/02/2004 06:33PM
Posted 04/02/2004 06:33PM Opening Post
I am waiting to receive my SXV-H9 with guide camera today, so I am going to image something tonight in spite of the Moon or clouds, even if it's a water tower down the street.

I live in Deer Park, Texas (next to Houston), surrounded by
refineries/chemical plants, so light polution is a constant. My main interests are imaging galaxies, nebulas, comets, globulars, then others. Currently, I will only be taking B&W images.

I'll be using a 9.25" SCT at F6.3 or F3.3 and/or a FS-78 at F8 on and LX200 fork mount/wedge.

I already have a 1-1/4" Lumicon OIII and a 1-1/4" 1000 Oaks LP-1 filter. Would either of these help on certain objects, or is it better to do without?

Any suggestions for future filter purchases (when my budget recovers from buying the camera). I've heard and read about the Hutech LPS-P1 filter. For B&W would it offer any great advantage over what I have, or primarly when I start color imaging?

Thanks for any comments.
Steven Jindra
Posted 04/03/2004 11:38AM #1
Steven,

I'm in a suburb of Cleveland with very bad light pollution. The Hutech LPS made a big difference with my Canon 10D.

Russ
Posted 04/04/2004 06:47AM #2
Hi Steve, The OIII and LP-1 are for visual use, not for imaging. Light pollution is not dealt with in CCD imaging using these types of filters. When you image using an astronomical CCD camera such as your SXV-H9, it is dealt with through very specific imaging and processing techniques. Read Jim Burnell's paper on the subject at wwwjburnellcom/CCDSeminars.html or in the book "The Handbook of Astronomical Image Processing" by Richard Berry and Jim Burnell

-Gary
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