M8_Single frame

[Rex]

Hi Everyone,
Raymo has inspired me to post this single frame of M8 taken with a modded Canon 1100D. Single frame ISO800 300sec. This is a straight CR2 to Jpg convert straight out of the camera. Guided with a QHY5. I had some polar alignment issues by the looks but not to bad.

[raymo]

Hi Rex, that's a ripper. Obviously I am doing something wrong because
my stacked results are not as sharp as my single frames.
raymo

[cometcatcher]

Cool! What was the scope Rex?

[nebulosity.]

Great stuff Rex :thumbsup:

Jo

[alistairsam]

Looks great Rex. well done. Pretty darn good for 1 sub.

I had a play with startools to remove the blue gradient, attached. I used your jpg so won't be as good, but helps when you remove the blue cast. just blink between the two.
what scope was this?
the top right corner suggests a minor tilt of your camera or focuser, not PA. best to do a star test collimation to see if the secondary is centered.
PA would show up as field rotation in all corners.

Cheers
Alistair

[Camelopardalis]

Nice one Rex :thumbsup: I'm going to have to rifle through my collection now :lol:

See raymo, what did I tell you before ;)

[raymo]

We'll have to call you Ripper Rex.
I'm going to have to look through all our recent communications now
to find out what you told me Dunk. [sorry about the brief hijack Rex].
raymo

[PeterEde]

I wouldnt bother stacking that. I'd even be happy to put it on my wall

[Camelopardalis]

Inspiration, raymo ;)

[paul71]

Hi rex very nice indeed!. I have also added a single m8 sub I did a few weeks ago for comparison, I used the same 1100d modded and iso800 and also 300 seconds just goes to show you can take some nice pictures
without to much hassle cheers.

[Camelopardalis]

OK...so this is my lame output...240s ISO1600 unmodded 1100D...with my little refractor. I'm not so much worried about the details, that's an aperture thing, but I'm not getting anything like the colours :sadeyes:

What were your cameras modded with guys? It's a pretty dramatic difference :D

[paul71]

Hi dunk I sent my 1100d to hap griffin in the u.s he replaced the stock
filter with a Baader UV/IR block filter it allows much more hydrogen-alpha light but blocks IR.
Well worth the money I think?.

[Rex]

Thanks Raymo, Could be a number of things that may cause that, a little heavy on the noise reduction is the thing that comes first too mind. Mind you someone with a lot more experience than me would have a better idea.



Thanks Kevin, my scope is a skywatcher carbon fibre 8" f4. I gotta say I absolutely love it. the model number is CFP2008.



Hi Jo, thanks mate, been a while.



Thanks Alistair. Yeah I am really happy with the way the 1100D performs since I modded it. My scope is a Skywatcher Carbon fibre 8" f4. CFP2008. Thanks for the tip about the camera tilt. I was surprised about the distortion to be honest as I spent quite a bit of time on my alignment that night. I will have to investigate what is causing it then. Yeah the blue gradient I think comes from the CLS clip filter. I normally remove it during processing by using the DBE tool in PI. Nice clean up Alistair.



Thanks Dunk, I would love to see some of your single shots.



Hahahaahaha, Ripper Rex, thanks Raymo. Hijack away mate, no problems at all.



Thanks Peter, It will look even better once stacked and processed.





Nice Paul, Like I said earlier, the 1100D performs so muchbetter when modded.



Would have to be a result of the astro mod Dunk. In the Mod the IR cut filter gets removed which allows the camera to sense and pick up the HA, that the stock filter cuts out. that's why they are so red.

[Amaranthus]

Whoa Dunk, you're getting some serious CA there! :lol:

[Camelopardalis]

Thanks chaps, I'll have to look into the mod, seems well worth it to me! How does it handle other frequencies? Others are unaffected? (Thinking about Trifid)

Barry, yeah it's a little doublet, and I'd left the focus lock screw at home, so I had some fun :eyepop: it's noticeably worse one side of focus than the other. Interestingly, it's much reduced with stacking :confused2:

[raymo]

I actually don't like the modded cameras; the red completely swamps
the other colours, particularly the blue. Rex, I don't do any noise reduction, I wouldn't know how.
raymo