Showing posts with label M35. Show all posts
Showing posts with label M35. Show all posts

Friday, March 7, 2014

Deep Sky Improvements: Revisiting M41 and M35

I'm pretty sure M41 was the first open cluster I photographed (other than the Pleiades) about a year ago. It really helped me realize that there are more objects out there that I can see with my camera than I had ever imagined! I've come a long way since then, so I was glad when M41 came up on the observing list for February.

open cluster M41 with T5i
M41, stack of 118 subs, 77 darks, 70 bias, ISO 3200, 300mm, f/5.6, 1.3 sec
compare M41 with XT and T5i
Comparison of my previous attempt with the Canon Rebel XT, and my latest (right) same photo as above

M35 is a repeat for me as well, last seen in May 2013 with asteroid Vesta nearby. Again, the amount of light gathered by the T5i with the same exact lens is pretty amazing.

open cluster M35 and propus
Stack of 60 subs, 77 darks, 70 bias, ISO 3200, 300mm, f/5.6, 1.3 sec

Thursday, May 2, 2013

Monday, March 4, 2013

Asteroid hunting: Ceres and Vesta

If someone had told me a year ago that I'd be able to see asteroids from my apartment building with an 8 megapixel camera, I would have said "you're crazy!" Currently at magnitude 7.54 and 7.25 respectively, Ceres and Vesta were my best chances for bagging some big rocks near the limit of my camera's (and sky conditions') capacity.

The dwarf planet Ceres is the largest asteroid in the asteroid belt. At nearly 600 miles in diameter, it is the would-be planet that never came to exist thanks to a disruptive gravity tug from Jupiter. Ceres alone comprises nearly 1/3 of the mass of the asteroid belt. 

Vesta, the second largest asteroid, is typically the brightest asteroid. Vesta is over 300 miles in diamater and makes up about 9% of the mass of the asteroid belt. Vesta was recently visited by NASA's Dawn spacecraft

Stack of 46 subs, each at 75mm, ISO 1600, f/4.5, 4 sec (cropped)
Stack of 43 subs, each at 75mm, ISO 1600, f/4.5, 4 sec (cropped)
The asteroids are barely visible, but after some tedious work lining up charts in Stellarium and Star Walk, I'm confient that these dots are asteroids and not dim stars. This is also my first sighting of open cluster M35, so I can check that one off my list!