[Atmos (Colin)]

Originally Posted by Placidus

Congratulations on an excellent image. Good composition. Capture seems faultless. Congrats on the 1-hour subs.

You've wrung out the very last drop of nebulosity in the processing - perhaps a tiny bit less pushed might be even better.

Makes us want to rush out and photograph that "Aladin's Cave" star-filled bubble at 8 o'clock and about half way out from the centre.

Very best,
M & T

Thanks M & T, I do agree that it has been pushed a tad too far. I tried going as far as I could without black clipping it. I was just curious to see what could be dragged out of 2 hours of exposure. Planning on getting a fair bit more Ha, thinking I might TRY to stick with the 1 hour subs though. Takes about half an hour with T-Point to get close enough to SCP.

Originally Posted by Bassnut

wow, thats an impressive image. Whats far more impressive, is 1hr subs on an EQ6, very well done!. Yes, 3nm sure works in urban enviroments, as you have proved, smart purchase. And no darks! sheesh, awesome.

I was a bit skeptical of what I would be able to achieve with the EQ6. As nice as it is performing I do think I am going to have to be upgrading the mount in the future, still trying to decide what to go with. Thinking the MYT but I am still unsure and it is still a little way off I think.

Originally Posted by alpal

Hi Atmos,
that's great to get a 1 hour subframe.
I can't however make out the Tarantula Nebula when
I compare it to this other Ha shot:
https://hughsblog.files.wordpress.co...0_ha_st_01.jpg

It looks so different.

cheers
Allan

My RAW subs do look a bit like that before I start any processing or when I look at them through the Low/Medium stretching through MaxIM DL.

Originally Posted by Slawomir

A great result Colin - and congratulations on your 1-hr sub!

As for darks, I would stick to just master bias (ideally super bias), flats and a bad pixel map. Darks will only inject more noise and are IMO unnecessary, unless you have some strong camera-induced signal with longer exposures.

I made a master bias from 200 frames, still worth running the Super Bias routine in PI?
I'll have to have a look at creating a bad pixel map, will save near 300 hour in taking darks

Originally Posted by gregbradley

A beautiful and deep Ha image Colin. Very impressive.

Thanks Now I just need to get another 80 hours to catch up to a proper deep field!

Originally Posted by rustigsmed

excellent stuff colin, am pretty interested to see the raw frames to ascertain the difference in quality and vs the risk factor (guiding / satellites / clouds etc). 30 mins is as far as i've gone ... but that was with a dslr - haha.

looking forward to seeing more!

I did a Linear Fit and then the same processing on all three images. They're full res and ~3mb each.

1200 seconds
2400 seconds
3600 seconds

Originally Posted by DJScotty

Awesome image Colin. So much intricate detail to lose yourself in. 1 hour subs is "Impressive, most impressive!"

Thanks Scott, I am surprised at how they came out.