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By alexbb
This is another finished target for this season.
I (quite) recently bought a TS Photoline 102 ED with FPL53 which performs surprisingly well for a doublet. So I put it to tests and imaging, in parallel with an older FPL51 AstroProfessional 102 ED doublet.
The blue color correction is much better in the newer TS. I shoot luminance often with both and then take the highlights from the better scope.
For this image I also used some older data that I had available, shot with a 130PDS, but that maybe only made my life more difficult. Not that otherwise I shot data through the refractors in a single panel with reducers/correctors, but also in 2 panels with no reducing correctors. Same about the RGB. Some shorter exposures from the backyard, some from a dark site, most of the G data from a dark site, B and R from home (clouds came in at the dark site) and a lot of other adventures.
But in the end I managed to put them all together and made an image out of them.
You can watch it in full resolution and see other details on astrobin: Great Orion Nebula
Clear skies!
Alex
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By MarsG76
The Witch Head Nebula, aka IC2118 & NGC1909 in the constellation Orion, near the star Rigel.
This object is very large in the sky, being 3°×1°, so I had to use my smallest telescope to deliver the wide angle and low power needed to image all of the "Witches" profile.
This is a very difficult object to image using a DSLR, and a dark sky is needed to capture it in it's full glory. I thought that I'd give it a go with my DSLR, and see what I end up with... I'm happy that the end result in my image shows the shape of the "Witch Head" but I think that the overall image will not be winning any awards.
This image has been exposed through a 80mm refractor @ 500mm FL, using my cooled and full spectrum modded DSLR for a total exposure time of 12 hours and 34 minutes, in a semi-rural, Bortle 5 (maybe 4) sky.
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By MarsG76
I managed to bag another object, this time the reflection Nebula M78 in the constellation Orion.
I was planning to capture natural color subs than add some HAlpha and OIII narrowband data to emphesize the image details and reveal deeper matter, but after processing the OSC/RGB subs, I decided that adding the narrowband data is not necessary.
This image was taken across two nights (juggling clouds), 6th and 11th February, and I managed to capture 3 hours and 18 minutes worth of useful subs (21x60 sec, 19x120 sec, 18x180 and 17 x 300 second subs).
The telescope used was a 80mm refractor, at 500mm FL using my full spectrum modded and cooled 40D DSLR.
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By MarsG76
Hello all,
I managed to bag another object, this time the reflection Nebula M78 in the constellation Orion.
I was planning to capture natural color subs than add some HAlpha and OIII narrowband data to emphesize the image details and reveal deeper matter, but after processing the OSC/RGB subs, I decided that adding the narrowband data is not necessary.
This image was taken across two nights (juggling clouds), 6th and 11th February, and I managed to capture 3 hours and 18 minutes worth of useful subs (21x60 sec, 19x120 sec, 18x180 and 17 x 300 second subs).
The telescope used was a 80mm refractor, at 500mm FL using my full spectrum modded and cooled 40D DSLR.
Clear Skies,
MG
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By SuburbanMak
Chatting on here about possible darker sites near me and came across the CPRE light pollution survey which you can contribute to this week.
I’m going to rope the kids in & thought I’d share the link:
https://www.cpre.org.uk/what-we-care-about/nature-and-landscapes/dark-skies/star-count-2021/
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