Deep LMC with 100ED

avandonk · #1 01-10-2006, 06:33 AM

Only had time for four fifteen minute exposures because of Moon. Image turned out alright as temperature close to zero. Check out the dim stars they are everywhere.
Details
Canon 5DH, Orion 100ED with Astro Physics focal reducer so 640mm at F6.4, 4X15 min at ISO 400, corrected for flats with ImagesPlus, stacked with RegiStar, digitally developed with IP, levels in PS.

Large image 1.4MB
http://members.optusnet.com.au/~trlee8/LMC_100ED.jpg

Bert

Dennis · #2 01-10-2006, 07:53 AM

Very nice image Bert. Zooming in on the Tarantula on the larger image was very impressive.

Cheers

Dennis

richardo (Rich) · #3 01-10-2006, 05:00 PM

Hi Bert, top widefield image of our favourite area!
The AP reducer's done a great job with no probs by the looks.

How do you find the ED100 on bright stars, planets and limbs of the moon for CA ??

Cheers
Rich

EzyStyles (Eric) · #4 01-10-2006, 05:37 PM

nicely captured bert. can see heaps of other nebs around it.

Lester · #5 01-10-2006, 05:58 PM

Nice one Bert.

avandonk · #6 01-10-2006, 06:54 PM

I have never imaged the the Moon with this setup Rich. I should try it. As far as i can tell there is almost no CA.
Here is a 100% crop from a 120 second exposure ISO 400 jpg as it came out of the camera. Unprocessed.

Bert

h0ughy (David) · #7 02-10-2006, 12:51 AM

awesome shot Bert! With a bit more processing I am sure there is more information in that shot!!

tornado33 · #8 02-10-2006, 12:35 PM

Great work Bert. Yes the lens and camera sure are impressive. The Tarantula area is full of detail.
The crop of a single image is amazing too, small round stars.
Scott

avandonk · #9 02-10-2006, 02:54 PM

Thanks all. Scott am very happy with the 100ED and Astro Physics 2.7" focuser and focal reducer. I bought it second hand with an adapter for 80ED/100ED size tubes. If you remember I cut 100mm off the 100ED's tube to fit the AP 2.7" focuser before I even looked through it.
This mod has produced a 640mm F6.4 telescope which performs nearly as good as an upmarket APO. The next thing to do to it, is to get the three black lens spacers out of the light path. These spacers cause the 'shadows' in the diffraction around really bright stars (see 100% crop below).
Fifteen minute exposures were almost impossible with the original motors on the HEQ5 because of 'jumps'. The Astromeccanica motors allow me to do long exposures at any focal length as they have no backlash and track the mount very smoothly and accurately.

Bert