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I agreeImaging telescopes or lenses:Orion Optics UK AG12, Tele Vue NP127is
Imaging cameras:ZWO ASI1600MM-Cool, ZWO ASI 183 MM pro
Mount:Paramount MEII with Absolute Encoders
Guiding telescope or lens:Orion Optics UK AG12
Guiding camera:Starlight Xpress Lodestar X2 Mono
Software:Sequence Generator Pro, PixInsight 1.8, PHD Guiding 2
Filter:Astrodon Gen 2 LRGB 36mm
Accessory:Gerd Neumann Flat Panel
Resolution: 2420x1796
Dates:Jan. 27, 2019, Feb. 8, 2019
Frames:
Astrodon Gen 2 L 36mm: 66x200" (gain: 99.00) -20C bin 1x1
Astrodon Gen 2 RGB 36mm: 241x200" (gain: 99.00) -15C bin 1x1
Integration: 17.1 hours
Avg. Moon age: 12.49 days
Avg. Moon phase: 32.85%
Bortle Dark-Sky Scale: 4.00
Temperature: -5.00
Astrometry.net job: 2685698
RA center: 173.269 degrees
DEC center: 53.059 degrees
Pixel scale: 0.701 arcsec/pixel
Orientation: 358.095 degrees
Field radius: 0.293 degrees
Locations: Dark Star Observatory, Taos, New Mexico, United States
Data source: Own remote observatory
Remote source: Non-commercial independent facility
Images from the following two scopes (piggybacked) contributed to this image:
AG12+ASI1600MM at .70 asec/pix
TV127is+ASI183MM at .75 asec/pix.
They were all registered to the best R image taken on the AG12.
Using L from the TV NP127is refractor effectively eliminates the spikes from the AG12.
Imaged on nights of 1/27/2019, 1/28/2019, 2/8/2019.
This is one my favorite galaxy clusters. The bar in NGC3718 is just lovely.
A careful look at this colorful cosmic snapshot reveals a surprising number of galaxies both near and far toward the constellation Ursa Major. The most striking is NGC 3718, the warped spiral galaxy near picture center. NGC 3718's spiral arms look twisted and extended, mottled with young blue star clusters. Drawn out dust lanes obscure its yellowish central regions. A mere 150 thousand light-years to the left is another large spiral galaxy, NGC 3729. The two are likely interacting gravitationally, accounting for the peculiar appearance of NGC 3718. While this galaxy pair lies about 52 million light-years away, the remarkable Hickson Group 56 can also be seen clustered above NGC 3718, near the top of the frame. Hickson Group 56 consists of five interacting galaxies and lies over 400 million light-years away.
(apod.nasa.gov)
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