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This is my first image using my Optolong L-Enhance dual band filter and the free version of Pixinsight, which does certainly take a lot of time to learn. I know it's not going to win any prizes but I'm quite pleased with it. Especially after all the time it's taken me to produce Master Darks, bias and flats today, luckily the weather has meant I've been stuck indoors most of the day.
This is with my Esprit 100ED, Canon 450D, 24 * 300s Lights, 100 flats, 100 Bias & 30 darks. I do struggle with post processing as I'm not very artistic, so all advice on where to go forward with this will be appreciated. I am hoping to get some more subs with my LP filter to add to it.
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!
Here you have a complete image taken last Saturday with the ED72 + QHY168C + TS x0.79 + Optolong L-eNhance filter + AZEQ5 set up from La Mancha fields in Spain.
36x300s subs + calibration frames processed with Pix.
Both little used, 'as new' condition, selling due to change of camera.
Price incl. shipment: Ha: £99; CLS: £49
These are compatible with Canon 5D / 6D, etc, here are the links for details on these filters:
I've been pleasantly surprised by the effectiveness of Optolong's UHC filter. I live in Canary Wharf area in London and this filter enabled me to extend the exposures a lot. The sky background is easy to get rid of as well.. It produces a green cast which is very easy to remove.
The image is not great, sorry the collimation is off and the tracking was a hit and miss, but I like the colours in this RGB image.