NGC 2259
NGC 2259 is an open cluster located in the constellation Monoceros. It was discovered by the German-British astronomer William Herschel in 1787. NGC 2259 is about 3,311 pc (10,800 light years) from the solar system and the latest estimates give an age of 316 million years. The apparent size of the cluster is 3.5 minutes arc, which, given the distance, gives a maximum full size of about 11.0 light years.
NGC 2259 is the small open cluster top right in the image - I have no information (or associated name) for anything else in the image.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: QSI 6120
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon Ha (3nm), Astrodon SII (3nm), Astrodon OIII (3nm)
Accessories: Robofocus Focuser, ATIK EFW3
Original Resolution: 3876 x 2632
Dates: 13th Feb - 17th Feb. '20
Frames:
Astrodon Ha 20 x 15'
Astrodon OIII 12 x 15'
Astrodon SII 11 x 15'
Total Time: 13 Hours 45 Mins.
Center (RA, Dec): (99.303, 10.683)
Center (RA, hms): 06h 37m 12.726s
Center (Dec, dms): +10° 40' 59.791"
Size: 69.5 x 46.5 arcmin
Radius: 0.697 deg
Pixel scale: 0.986 arcsec/pixel
Orientation: Up is 271 degrees E of N
NGC 2259 is the small open cluster top right in the image - I have no information (or associated name) for anything else in the image.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: QSI 6120
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon Ha (3nm), Astrodon SII (3nm), Astrodon OIII (3nm)
Accessories: Robofocus Focuser, ATIK EFW3
Original Resolution: 3876 x 2632
Dates: 13th Feb - 17th Feb. '20
Frames:
Astrodon Ha 20 x 15'
Astrodon OIII 12 x 15'
Astrodon SII 11 x 15'
Total Time: 13 Hours 45 Mins.
Center (RA, Dec): (99.303, 10.683)
Center (RA, hms): 06h 37m 12.726s
Center (Dec, dms): +10° 40' 59.791"
Size: 69.5 x 46.5 arcmin
Radius: 0.697 deg
Pixel scale: 0.986 arcsec/pixel
Orientation: Up is 271 degrees E of N
Sky Map
SII, Ha & OIII in the image:
Annotated Image
