Mixed image with new equipment and old one.
For me a very difficult target.
Perfect to compare the performance of the new filters, mount and focuser.
Really an improvement from last year non published picture. www.astrobin.com/298085

Anyway, I don’t try to solve the small inside, maybe at some point next year 😀

www.astrobin.com/356402/C

Technical card
Imaging telescope or lens:Altair Astro RC250-TT 10" RC Truss Tube

Imaging camera:ZWO ASI1600MM-Cool

Mounts:Skywatcher AZ EQ-6 GT, Astro-Physics Mach-1 GTO CP4

Guiding telescope or lens:Celestron OAG Deluxe

Guiding camera:QHYCCD QHY5III174

Focal reducers:Astro-Physics CCDT67 – 0.67x Reducer, Riccardi Reducer/Flattener 0.75x

Software:Astro-Physics AAPC, Main Sequence Software Seqence Generator Pro, Pleiades Astrophoto PixInsight

Filters:Astrodon HA 36mm – 5nm, Astrodon O-III 36mm – 5nm, Astrodon B Gen.2 E-series 36mm, Astrodon G Gen.2 E-series 36mm, Astrodon R Gen.2 E-series 36mm, Optolong OIII 6.5nm 36mm, Optolong Ha 7nm 36mm

Accessories:MoonLite NiteCrawler WR30, MoonLite CSL 2.5" Focuser with High Res Stepper Motor

Resolution: 3916×2876

Dates: June 14, 2018, June 20, 2018, July 17, 2018

Frames:
Astrodon B Gen.2 E-series 36mm: 15×30" (gain: 200.00) -20C bin 1×1
Optolong Blue 36mm: 17×90" (gain: 200.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 15×30" (gain: 200.00) -20C bin 1×1
Astrodon HA 36mm – 5nm: 12×600" (gain: 200.00) -20C bin 1×1
Optolong Ha 7nm 36mm: 6×600" (gain: 200.00) -20C bin 1×1
Astrodon O-III 36mm – 5nm: 13×600" (gain: 200.00) -20C bin 1×1
Optolong OIII 6.5nm 36mm: 17×600" (gain: 200.00) -20C bin 1×1
Astrodon R Gen.2 E-series 36mm: 15×30" (gain: 200.00) -20C bin 1×1
Optolong Red 36mm: 14×90" (gain: 200.00) -20C bin 1×1

Integration: 9.2 hours

Avg. Moon age: 4.40 days

Avg. Moon phase: 25.66%

Astrometry.net job: 2154174

RA center: 269.636 degrees

DEC center: 66.634 degrees

Pixel scale: 0.508 arcsec/pixel

Orientation: 269.888 degrees

Field radius: 0.343 degrees

Locations: Berga Resort, Berga, Barcelona, Spain

Data source: Backyard

via Flickr https://flic.kr/p/KD6HEV

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