Brilliant!
Thanks for all the info, Terry.
They'll fit quite easily at 300mm by the looks of it, but Saturn will just be small and given how overexposed it will be, not sure how much it adds to the scene in general.. makes it look like a bright star
hmm decisions.
I just hope it's clear.
Quote:
Originally Posted by AstroTourist
Mike,
The attached image could help with some planning
Taken at 0225 this morning Brisbane time (1825UT) when I was doing a practice run for tonight
Imaged with 450D on Televue TV76 with 0.8FR (384mm EFL) giving a field of view of 3.3 x 2.2 deg. Exposure was 4 mins unguided 1600 ISO f5 and limited tweaking in Photoshop.
I have increased the field of view (original 3.3 x 2.2 FOV shown boxed in white) and overlayed a screen shot from "the Sky".
You can see: - Saturn (way overexposed) in the botton right and Lulin on the left.
- A north indicator to show orientation
- The ecliptic (in aqua) running down at about 60 deg on the left. Lulin quite coincidentally is pretty much on the ecliptic (but travelling in the opposite direction round the sun to the planets) so is travelling parallel to this line towards the bottom of the image
- Orientation of Lulin's tail and some indication of length (but I have not got the full extent). At last we have a comet with the tail streaming out behind it!
- Other field stars outside the field of view (from "The Sky") to further aid location and orientation.
- The image is before closest approach which will occur on the other side of the world today and it will be moving away tonght.
I will post a clean view of the image when I have done something effective with the overexposure of Saturn.
Trust this helps.
Good luck for tonight
Terry |