Western Veil

[Adreneline]

Despite the lack of astro darkness last night turned out to be quite rewarding and provided a first opportunity to use my recently (February!) acquired ASI1600 with my WO-ZS71 and ZWO-EFW.

This is 30x120s of Ha + 30x120s of OIII , gain 139, offset 56. Pre-processed in APP and then processed in PI with a final colour adjustment in PS.

This is the first time I have imaged Ha and OIII and found the background levels to be almost identical; using LinearFit in PI made no discernible change at all to the OIII.

Focus could have been better I feel. I just could not get below FWHM of 2.1 on either filter using SharpCap and SGPro gave an average HFR of 1.4

Thank you for looking.

Adrian

[Craney]

Marvellous.     it is such a wonderfully ornate nebula it almost sparkles by itself. 

Did you manage this with 1 1/4" filters   ??

[Gina]

Very nice indeed.  Nice tight stars and sharp image.

[Adreneline]

16 minutes ago, Craney said:

Did you manage this with 1 1/4" filters   ??

Thank you for the kind comments. Yes, I did use my 1.25" filters. I've set up my ZWO-EFW with RGB+Ha+OIII. I never seem to get along with L very well and in the past I've ended up not using it at all, so I figured taking L out and replacing it with OIII might be better. All my previous NB images have been with a manual 2" filter setup and I was wondering if the focus issue might be down to the smaller filters but I don't know - I'm clutching at straws really.

13 minutes ago, Gina said:

Very nice indeed.  Nice tight stars and sharp image.

Thank you Gina - I'm glad you like it. So far I am really liking the results I have achieved with the ASI1600. Maybe I need to be more adverturous with gain/offset settings but I like the fact that lots of shorter exposures give very good results. There is also less wastage compared with the 300s and 600s subs I have been taking with my CCD - living on the East Midlands flight path can be very frustrating!

Adrian

[Gina]

I know what you mean about flight paths - I seem to be on the intersection of three!  And yes the ASI 1600MM-Cool with lots of short exposures certainly helps.

Edited July 3, 2019 by Gina