Messier 7 or M7, also designated NGC 6475 and sometimes known as known as the Ptolemy Cluster, is an open cluster of stars in the constellation of Scorpius.
The cluster is easily detectable with the naked eye, close to the "stinger" of Scorpius. It has been known since antiquity; it was first recorded by the 1st century astronomer Ptolemy, who described it as a nebula in 130 AD. Giovanni Batista Hodierna observed it before 1654 and counted 30 stars in it. Charles Messier cataloged the cluster in 1764 and subsequently included it in his list of comet-like objects as 'M7'.
M7 in Scorpius from Petina on Mt. Alburni (South Italy).
The photo is the result of 16x120" + 3x240" with Canon Eos 400D unmod. (no dark frame).
The OTA is William Optics FLT110 f/7 with flattener on EQ6 Pro. Guide with Guidemaster and ToUcam Pro II on Vixen VMC110. The image is original frame, no crop only resize. Elab. MaximDl + PS CS3
Congratulations on AAPOD, that is a great M7, can not wait to see more of your images.
2009-06-05 15:19:27 GMT
nightskystargazer
Nice Pic.
Thanks,
Tom
2009-06-06 13:41:12 GMT
alcorevil
Dear TonyF,
I have submitted another photo... but if you want to see other my
astrophotos, you can visit my home page: http://lucadavino.lahost.org
Thanks
Luca
