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m44

alacant

By alacant
in Imaging - Deep Sky

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alacant

alacant

Posted
Posted

Hi everyone. I haven't dared post here having been hanging around the beginners section for the past year. Still many doubts and unanswered questions about AP but anyway... Here's one I haven't seen for a while... Thanks for looking and clear skies.

m44.thumb.jpg.cb4d92fc6b8a42dcb01bbd79ad2bbabe.jpg

 

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ollypenrice

ollypenrice

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Equipment list in the sig helps others to give advice. This has good tight stars, nicely colourful, and a generally excellent background sky. (There's a minor horizontal bright band along the bottom. This can be beaten into submission in Ps and others but I wonder why it's there.) You're not using an Atik 383?

Olly

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alacant

alacant

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Hi everyone and thanks for your encouraging comments. All much appreciated. Sorry for the lack of detail; it's taken with a Canon 700d.

31 minutes ago, ollypenrice said:

horizontal bright band along the bottom

Yeah, this is the third replacement camera I've had. The area you mention is common to all three: Something to do with non blackened mirror edges (?). It doesn't happen with my daytime 1200d or my gf's Nikon, so I'm pretty certain it's the camera rather than anything in the optical train.  As you say, it's ps-able but if anyone has any ideas of losing it that would be great. TIA from an overcast Alicante.

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alacant

alacant

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Hi. Thanks. I've asked before about this but never got a solution apart from return the camera. Here's an example with the bottom edge vignetting corresponding to the mirror hinge. Flats frames deal with most of the problem but don't remove it completely. It's a pain...

s2.JPG

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gnomus

gnomus

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58 minutes ago, alacant said:

Hi everyone and thanks for your encouraging comments. All much appreciated. Sorry for the lack of detail; it's taken with a Canon 700d.

Yeah, this is the third replacement camera I've had. The area you mention is common to all three: Something to do with non blackened mirror edges (?). It doesn't happen with my daytime 1200d or my gf's Nikon, so I'm pretty certain it's the camera rather than anything in the optical train.  As you say, it's ps-able but if anyone has any ideas of losing it that would be great. TIA from an overcast Alicante.

Specifically is this a 383 plus EFW2?

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gnomus

gnomus

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12 minutes ago, ollypenrice said:

That's very good information. Thanks.

Olly

Different power options did not help my issue, which was one of reflections.  I found two fixes for this: 1) putting a 6-7mm spacer between the Atik 383L and the EFW 2; and 2) purchasing a Moravian G2-8300.

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