TAC-imaging : TAC Imaging

TAC-imaging · TAC Imaging

Group Information

Members: 215
Category: Astrophotography
Founded: Jan 30, 2001
Language: English

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17 New Messages - New Questions

Description

This list includes all talk about CCD and film astrophotography and anything related to it, including where people want to meet for a night of astrophotography in the San Francisco Bay Area.

Links to your photos are encouraged!

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Re: Orion Ritchey f/8? OK, thanks John. I was curious if the front corrector lens of that scope introduces any chromatic aberrations. I know for my AP160 that there is a measurable Posted - Sat Nov 28, 2009 1:38 am	Ray Gralak (Yahoo Gro... raygralak Offline Send Email
Re: Orion Ritchey f/8? Hi Keith, Ok, maybe I'm being too picky about the diffraction spikes. Does Floyd have a site with images I could look at? -Ray ... attended. I got a ... ST-2K. Posted - Sat Nov 28, 2009 1:30 am	Ray Gralak (Yahoo Gro... raygralak Offline Send Email
Re: Orion Ritchey f/8? Hi Ray, I'm using the 2" Astronomics RGB filters. I've got the RGB filter offsets to zero since I wasn't able to measure any repeatable offset above the seeing Posted - Fri Nov 27, 2009 9:00 pm	John winfij Offline Send Email
Re: Orion Ritchey f/8? ... John, I'm glad to hear that! With my camera I always use the scope with a reducer/corrector and the issues that come with one! I wasn't even thinking about Posted - Fri Nov 27, 2009 4:53 am	IVER iverriise Offline Send Email
Re: Orion Ritchey f/8? Ray, a good friend by the name of Floyd Blue had one of the Astronomics versions of the 8" at the last star party I attended. I got a chance to ask him a lot Posted - Fri Nov 27, 2009 4:18 am	Keith kemyers91384 Offline Send Email
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