Comet Boattini C2007/W1 with 450D

[tornado33]

Hi
Got this newish comet Boattini, lurking west of Corvus, positioned very high in the night sky, unusual for a comet it seems. Tried out the new 450D on it

7x5 and 2x10 mins ISO400, Hutech LPS filter, Baader MPCC coma corrector, 6 inch f3.6 SN. Cold conditions
Scott

[iceman]

Very nice, Scott. What's the FOV there? Is the image cropped?

[Ian Robinson]

Autoguided ? or did you program the comet's elements into the controller ?

[Matty P]

Excellent image Scott. Captured extremely well.

Comet Boattini sure is getting brighter.

Well done.

[CometGuy]

Nice Scott,

Its certainly brightening nicely..

Terry

[tornado33]

Thanks all
Technically the image is very slightly cropped as it was taken with about 550mm fl but the comet moved during the run so some slight cropping occoured. The normal FOV is 138x 92 arc mins, but will be a bit less because of the cropping.

I took the subs hand guiding on a guidestar with a separate guidescope and Q guider monochrome camera, my keeping the star centered on a virtual recticle on the laptop screen, as the 20+ year old Sampson mount has no autoguide capability and no dec drive. I aligned on the comet in Iris software, thankfully the strong central condensation was bright enough for Iris to do this

Note some uneven gaps between stars, caused by me not always taking each sub right away, sometimes Id pause to inspect each sub to make sure focus and guiding was okay, and pausing to go make a hot cuppa through the run :)
Scott

[prokyon]

Very nice picture, Scott!

I am from the northern hemisphere, Austria. I agreed today. Please apologize my english :shrug:
I took a picture of Boattini two days ago:


http://www.prokyon.startime.at/Bilder/Boattini2.jpg

http://www.prokyon.startime.at/Bilder/BoattiniKern.jpg
Pentax 75 SDHF and Canon 350d, 4 x 150s and 2 darkframes
(I had to stop the session, so I couldn`t make enough pictures. So it`s noisy)

This comet is going to leave the northern hemisphere. It was very close to the horizon. I am lookin forward to your pictures :)

cs

werner

[iceman]

Hi Scott

How come you changed between 5 and 10 minute exposures? Did you just sum all the exposures?

Did the comet elongate as it moved during that length of exposure?