stevelup

I've been playing some more with the data from this session. 

Changes were...

• Enabled drizzle when stacking - this seems to have reduced the noise significantly.
• Processed it as a dual narrowband image rather than RGB

@AstroFin Cheers - it exceeded expectations for sure. 

The original image was quite noisy with what I understand to be 'walking noise' which I've now read up on and it looks like I can mitigate by dithering.

I don't think it's poor polar alignment or bad tracking because as you said, the stars are perfectly round.

Also, I'm interested to know what people think about 180 x 30 sec -vs- let's say 90 x 60 sec. Assuming the tracking and alignment are good, do the longer exposures actually help.

Part of me wants to capture the same target again with dithering to see what difference it makes, but I might just do a different target instead and come back to this one.

My first nebula attempt, and I have to say I'm amazed.

Heart and Soul - Canon EOS600D (astro-modded) with Optolong L-eNhance filter. Samyang Lens was stopped down one click to F2.8.

180 x 30 seconds at ISO 800

I'm really, really happy with this considering it's my first ever attempt

Many thanks!

Thanks folks. Apologies for not acknowledging these replies - I didn't get a notification for some reason!

Great idea replacing these with thumbscrews - I'll look into that.

Hi Folks,

I got a second hand 200p at the weekend which needs collimating. Was wondering if anyone can tell me the hex key sizes needed. Are they metric or imperial?

Thanks,

Steve