Hemisphere:  Northern  ·  Contains:  12 Mon  ·  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2246  ·  NGC2237  ·  NGC2238  ·  NGC2239  ·  NGC2244  ·  NGC2246  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  Rosette nebula  ·  Sh2-275  ·  The star 12Mon
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ngc2244 in LSHO, 


            John Mart
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Imaging telescopes or lenses: Explorer Scientific ED102

Imaging cameras: ZWO ASI 1600MM-PRO

Mounts: SkyWatcher EQ6-R Pro

Guiding telescopes or lenses: ZWO 60/280 Guiderscope

Guiding cameras: ZWO 290MM mini

Focal reducers: Hotech 2" SCA Self-Centering Field Flattener

Software: PinInsight 1.8  ·  SGP  ·  PHD 2

Filters: Optolong SII 1.25" 6.5nm  ·  Optolong OIII 1.25" 6.5nm  ·  Optolong Ha 1.25" 7nm

Accessory: ZWO EAF Electronic Auto Focuser  ·  Pegasus Astro Pocket Power Box  ·  ZWO EFW 1.25 8 Position  ·  Startech Industrial USB3 Hub  ·  QHY PoleMaster PoleMaster

Dates:Jan. 5, 2021Jan. 9, 2021Jan. 10, 2021

Optolong Ha 1.25" 7nm: 90x180" (gain: 139.00) -30C bin 1x1
Optolong OIII 1.25" 6.5nm: 60x180" (gain: 139.00) -30C bin 1x1
Optolong SII 1.25" 6.5nm: 90x180" (gain: 139.00) -30C bin 1x1

Integration: 12.0 hours

Darks: ~60

Flats: ~60

Flat darks: ~60

Avg. Moon age: 24.43 days

Avg. Moon phase: 28.96%

Bortle Dark-Sky Scale: 4.00

Temperature: 7.00

Astrometry.net job: 4145772

RA center: 6h 32' 11"

DEC center: +4° 58' 54"

Pixel scale: 1.126 arcsec/pixel

Orientation: 85.011 degrees

Field radius: 0.873 degrees

Resolution: 4410x3418

Data source: Backyard


2021 update of one of my favorite targets. I'm really happy with the detail of this target that is strong across all 3 channels.

I took advantage of 2 cold nights to image at -30C and still had to toss a bunch of data, but really happy to see the improvement over my version from last year.

This is also my first session after replacing the Stellarvue 0.8x FFFR with the Hotech flattener (no reducer). I see round stars out to the edge with this setup.



John Mart
License: None (All rights reserved)

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ngc2244 in LSHO, 


            John Mart

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