February 2ndThe Flame nebula and Horsehead
This is a mosaic of two images. The Flame Nebula is 13x10 minutes, and the Horsehead is 20x10 minutes, all in Hydrogen Alpha
During the collection of images for the Flame, a satellite passed through the field of view.
Rather oddly, there are two star-like shapes on the image that are not present in any other frames.
M1 Crab Nebula
Sky conditions were poor, and although focus and guiding looked good, the later images did not have very round stars.
16 frames were taken, but only the first 9 go to making up this image.
9x10 minutes in Ha
Skies remained overcast until shortly after midnight, when a large clear spell arrived.
By this time D14 was receding rapidly.
This is a single 20 second image, taken at 00:26:34
A platesolve gives the coordinates as RA 13 19 09.91 DEC 78 48 30.5
These charts show the RA and DEC for the above image plotted with the predicted positions from the Ephemeris.
The slight discrepancy could be due to error in the computer clock, or perhaps uncertainty in the asteroid trajectory.
Nevertheless, the asteroid was close to where it was expected, and the pointing accuracy of the
ASA DDM60 mount made the task of capturing it quite easy.
Update: The published ephemeris is now different. Obviously the asteroid's parameters have been refined after further observations.
The new graphs show better agreement.
A sequence of 20 second exposures. Stacked with DeepSkyStacker using 'Maximum' stacking.
A video of the flyby
IC443 Jellyfish nebula