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#1
June 29th 08, 04:56 PM
posted to alt.binaries.pictures.astro
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astro: snake
4x600 seconds
Intes MK-69 (6" f/6 Mak-Cass 900mm fl) Celestron CI-700 Mount w/Gemini QHY8 CCD Camera The focus seems a little soft.... full resolution here, http://www.tisd.net/~jng3/observatory/b72_full.jpg -- John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3 
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#2
June 29th 08, 05:22 PM
posted to alt.binaries.pictures.astro
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astro: snake
I really like that John.
Nice image! "John N. Gretchen III" wrote in message m... 4x600 seconds Intes MK-69 (6" f/6 Mak-Cass 900mm fl) Celestron CI-700 Mount w/Gemini QHY8 CCD Camera The focus seems a little soft.... full resolution here, http://www.tisd.net/~jng3/observatory/b72_full.jpg -- John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3
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#3
June 29th 08, 06:08 PM
posted to alt.binaries.pictures.astro
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astro: snake
Thanks Richard,
I have discovered the focus problem and it has happened two nights in a row. The noes piece, by Moonlight, is a sloppy fit in the compression type drawtube, also Moonlight, and if the camera is not s supported and held square with the focuser you can turn one setscrew thus locking the camera not square with the light part. Very disappointing, two nights work may be lost! Richard Crisp wrote: I really like that John. Nice image! John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3
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#4
June 29th 08, 06:14 PM
posted to alt.binaries.pictures.astro
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astro: snake
I meant to say ... not square with the light path...
John N. Gretchen III wrote: Thanks Richard, I have discovered the focus problem and it has happened two nights in a row. The noes piece, by Moonlight, is a sloppy fit in the compression type drawtube, also Moonlight, and if the camera is not s supported and held square with the focuser you can turn one setscrew thus locking the camera not square with the light part. Very disappointing, two nights work may be lost! Richard Crisp wrote: I really like that John. Nice image! John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3 -- John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3
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#5
June 29th 08, 06:54 PM
posted to alt.binaries.pictures.astro
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astro: snake
John N. Gretchen III wrote: I meant to say ... not square with the light path... John N. Gretchen III wrote: Thanks Richard, I have discovered the focus problem and it has happened two nights in a row. The noes piece, by Moonlight, is a sloppy fit in the compression type drawtube, also Moonlight, and if the camera is not s supported and held square with the focuser you can turn one setscrew thus locking the camera not square with the light part. Very disappointing, two nights work may be lost! Richard Crisp wrote: I really like that John. Nice image! John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3 I gave up on such attachment methods for that very reason. I use screw on threads and V groove attachment such that the set screws pull to the bottom of the V forcing everything square when tightened. Before I always had one side of the image a bit out of focus. I still do if collimation isn't dead on but that's another story. BTW, that is one too low for me. My seeing down there is horrid. Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh".
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#6
July 2nd 08, 09:09 PM
posted to alt.binaries.pictures.astro
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astro: snake
Very nice image, the small version looks really good.
Stefan "John N. Gretchen III" schrieb im Newsbeitrag m... 4x600 seconds Intes MK-69 (6" f/6 Mak-Cass 900mm fl) Celestron CI-700 Mount w/Gemini QHY8 CCD Camera The focus seems a little soft.... full resolution here, http://www.tisd.net/~jng3/observatory/b72_full.jpg -- John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3
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#7
July 3rd 08, 06:30 AM
posted to alt.binaries.pictures.astro
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astro: snake
Hi John, I hate snakes but this one I can tolerate. Nice image of this
dark nebula. Joe "John N. Gretchen III" wrote in message m... 4x600 seconds Intes MK-69 (6" f/6 Mak-Cass 900mm fl) Celestron CI-700 Mount w/Gemini QHY8 CCD Camera The focus seems a little soft.... full resolution here, http://www.tisd.net/~jng3/observatory/b72_full.jpg -- John N. Gretchen III N5JNG NCS304 http://www.tisd.net/~jng3 ---------------------------------------------------------------------------- ----
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