Sketching M35 Open Cluster

In my journey of getting back into sketching I have another open cluster in the constellation Gemini. This was the second sketch I did on the night of December 28, 2019. The transparency and seeing that night varied a bit throughout, so I estimated it to be about a 3/5 for both. There was only a 4% moon that night, so the light reflecting from the moon didn't wash out any stars or nebulosity as it had set by the time I got around to sketching this cluster. Typically with clusters the bright moon doesn't affect the way it looks too much aside from washing out some of the dimmer stars. Temperatures were pretty steady that night hovering around the 30F mark with a few dips to about 27F.

M35 Open Cluster in Gemini
Messier 35 is a large open cluster in the constellation Gemini. There is an estimated 120 stars brighter than magnitude 13 within this cluster. M35 has an apparent magnitude of 5.3 and lies approximately 2800 light years from earth. It is estimated that this open cluster is around 110 million years old, and is actually approaching us at a rate of 5km/s. The overall size of the cluster occupies an area of 28 arc minutes which is about the size of the full moon in our sky. From end to end of this cluster it's actual size is around 24 light years. There is also a nearby open cluster with more compact and older stars.


In this timelapse I used regular printer paper, and an HB pencil to sketch. I had a booklight with a red bag over it.

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