© 2021 Michael A. Siniscalchi


What's New



Odds n Ends

     Messier 35
         Open Cluster in Gemini
      RA:06h 09m 36s  Dec: +24° 17' 44" Distance - ~3870ly  Size- 30'

Click on image for larger size
Location & Date
Backyard, Abbott Observatory- Long Island, NY,  January 2021
Orion ED80 F/7 ED, Moonlite focuser, Losmandy G11 Gemini
Image scale 2.54 arcsec/pixel
Baader R G B  filters
CCD temp -15°C
Red-12x 5m  Green-12x5m  Blue-12x5m  Bin 1x1
Planning & Acquisition
Image acquisition - Sequence Generator Pro w/PinPoint & PHD2 (guiding)
CCDStack - Calibration,  Normalize, Alignment, Combine
Adobe Photoshop -  Color Image composition, Noise reduction, JPEG conversion

From Wikipedia;
Messier 35 or M35, also known as NGC 2168, is a relatively close open cluster of stars in the west of Gemini, at about the declination of the sun when the latter is at June solstice.It was discovered by Philippe Loys de Chéseaux around 1745 and independently discovered by John Bevis before 1750.It is scattered over part of the sky almost the size of the full moon and is 3,870 light-years (1,186 parsecs) away. The compact open cluster NGC 2158 lies directly southwest of it. Charles Messier included the open cluster in his catalogue on August 30, 1764
NGC 2158 is an open cluster in the constellation of Gemini. It is, in angle, immediately southwest of open cluster Messier 35, and is believed to be about 2 billion years old.The two clusters are unrelated, as the subject is around 9,000 light years further away.Once thought to be a globular cluster, it is now known to be an intermediate-age, metal-poor open cluster that is a member of the old thin disk population.