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Setting up a Celestron Edge HD11 for CCD

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#26 Jeff Struve

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Posted 11 July 2013 - 01:28 PM

I finally had first lite last Friday... learned a lot!

First, mount tracking inaccuracies really show up with a bigger OTA! ;)

I am finding that I will probably need to mess with PEC on my mounts... did not seem to be that big of a deal in the past...

I really don't like how Celestron sets up for cameras... threaded duhinkies rather than standard EP mounting system... I prefer the 2" pressure coupler method...

I bought focus masks for my OTA's... works well visually, but I couldn't figure out what was to happen for photography... all I could see on the focus screen in Maxim was a picture of the full mask... no lines that moved around???

So... I did photgraph a few items... and they came out so-so... but the big issue is using CCDSoft to extract and combine, it would not let me save the final image... so I had to use screen pring to save a jpg... go figure...

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#27 Raginar

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Posted 11 July 2013 - 02:45 PM

Jeff,

You gotta keep focusing until the mask does its thing. When it's really out of focus, it looks like you're describing.

A good mount makes a huge difference at the focal length you're trying to image at. Anyone can image at 600mm on an AVX, it's your scope that makes you go 'woah, this is hard!'.

Try using DSS to combine your images. It's just easier.

#28 Jeff Struve

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Posted 14 July 2013 - 05:31 PM

Thanx, I did get it to focus.... just didn't think that there would be so much different between the camera and the EP... and yep... this imaging is really difficult... Wind is more noticeable, mount inaccuracies are more noticeable, focus is more noticeable...

Thanx again!

#29 Starhawk

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Posted 14 July 2013 - 09:00 PM

I did this with my C11 and hyperstar. It's the picture worth 1000 words...

-Rich

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#30 Starhawk

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Posted 14 July 2013 - 09:01 PM

Another...

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#31 Starhawk

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Posted 14 July 2013 - 09:02 PM

These are all with 30 second exposures, btw.

-Rich

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#32 Starhawk

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Posted 14 July 2013 - 09:04 PM

Detail from the M51 photo. I need to go deeper in these- project for winter.

-Rich

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#33 mark379

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Posted 15 July 2013 - 08:54 AM

I did this with my C11 and hyperstar. It's the picture worth 1000 words...

-Rich

Very nice... What type of mount is the c 11 on? did you need to do any guiding since exposures were so short?

#34 Starhawk

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Posted 16 July 2013 - 09:36 AM

It was on its original NexStar 11 GPS forks with a wedge. No guiding was required, though I was losing about one exposure in 6 to wiggle when a breeze came. I have recently deforked and plan to next image on a Mach 1 GTO- mainly because I saw how dark my background was and am curious about what I could get with much longer exposures.

On that note- I need to get moving along on a project to put some cleats of some sort around the periphery of the corrector for cable management.

-Rich

#35 Jeff Struve

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Posted 09 September 2013 - 09:16 AM

Excellent! I was running 30 second subs and didn't get the nebulosity on NGC1499, IC405, or M57... I am using the color CCD, ST8300c.... what camera did you use?

Thanx!






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