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As new condition ultra narrowband 1.25" Baader filter. 3.5nm bandpass for nice small stars.
Bought and loved it, but planning on going from mono back to OSC so won't have a use for this narrow a bandpass.
I scrapped all the Oiii and Sii data I previously took during a full moon (about 15 hours worth) and retook it all when the moon was a bit smaller at 76%. Ha was taken during 98% and 67% moon. All the lights were taken on the following nights: 12th, 19th and 20th September 2019.
Integration times, all in 600s subs unbinned:
Ha = 28.33 hours
Oiii= = 5.67 hours
Sii = 5.67 hours
The Ha data is really nice, and unsurprisingly the Oiii and Sii is not as strong (or nice).
I'm missing that (vital) step in my processing routine of getting the Sii and Oiii properly stretched to match the Ha, before combining. I dont really know how to deal with the weaker data properly. Any pointers would be appreciated.
What I do currently:
All the data is loaded into APP into separate channels/sessions.
The data is stacked and registered against the best Ha sub
This produces individual stacks of Ha, Sii and Oiii that are all registered
Each channel is processed with DPP in APP and then saved as a 16bit TIFF
Each is opened in PS
Stars removed with AA and any remnants removed and tidied up
I then open a blank RGB document in PS
I paste Ha into Green, Sii into Red and Oiii into Blue
Adjust the selective colour settings to get 'Hubble palette'
Adjust levels, curves, saturation until looks ok
All the Ha Sii Oiii data is then combined together in a single 'super' stack in APP using quality weighted algorithm to create a 'luminance'
That luminance layer is adjusted using levels, curves, and NC tools such as local contrast enhancement and deep space noise reduction (using masks to apply as required)
The luminance is pasted onto the above colour layer, and incrementally added using gaussian blur
Cropped and saved.
Here it is anyway I haven't intended on any more exposure time for this one, but will consider it, if the expert opinion dictates otherwise!
So, I am going to take my first steps into observing and hopefully imaging the sun, and get myself a filter for the telescope, just so that I have something to do, when I am working nightshifts, or the weather is bad at night. From what I can see, all I would need is a filter like this one https://www.firstlightoptics.com/solar-filters/astrozap-baader-solar-filter.html. Is that so, or is there anything else that you would highly recommend that I get, and why? My telescope is a Skywatcher 150PDS on a Celestron AVX mount.
On the same time, I am looking at buying a baader hydrogen alpha 3mm filter for imaging. Is this also something I could use for observing, or it is solely for imaging? Just curious.
Any comments, tips, advice would be very much appreciated, as I would rather not damage either my eyes, or more importantly my equipment! (jk)
Last time I imaged IC5070 for approx 3 hours, then as Orion rose up I decide to use up the last of the clear skies imaging B33/NGC2024.
15 x 600s at ISO1600 with Canon 1000d, ED80 FFx0.85, darks and bias.
Looking any advise on detail etc, how does guiding look, focus, etc. I'd like to try to progress so feedback welcome. It is still noisy, so definitely need more subs. I've also lost the plot somewhere with it somewhere during processing as there is artefacts all over the show!
Thanks in advance