Flame

[Whitters]

First light with 500mm f8 Tamron mirror lens
Eight x 120sec MX916 binned 2x2 17th Nov 2003


[ This Message was edited by: Whitters on 2003-11-17 20:34 ]

[Ian]

and the horsehead that you appear to have failed to mention...

Just out of interest, when do you sleep exactly? Do you have a hammock in the office?

What size is the CCD in that camera, the field is pretty wide for a 500mm lens.

Oh, and well done! You've gone and raised the bar again on the society's skill level, I think maybe some guerilla action on the electricity supply to your house should allow the rest of us to catch up

[Whitters]

I should add that they were taken with the moon 50% illuminated inthe sky too.

[Rocket Pooch]

We are not worthy!

Can I also see a wee horses head in the picture as well?

Anyway absolutely brilliant images, I'm very very impresses.

I think you have just thrown the glove down for Ian

[Rick]

Was that Toucam-captured?

[Whitters]

No, It was using the Starlight Express and a 500mm photographic mirror lens

[ This Message was edited by: whitters on 2003-11-18 15:14 ]

[Rick]

Ah. Right. Looks good.

Has anyone done any qantitative comparisons  of image resolution between webcam-type capture systems and custom astronomical image capture systems?

Just seemed to me that these images were really nice and crisp.

[Whitters]

size of ccd chip x-8.7 y-6.5 diag-10.9mm
Plate scale using 500mm
x - 0 Deg, 59 Min, 49 Sec
y - 0 Deg, 44 Min, 41.4 Sec
diag - 1 Deg, 14 Min, 40.1 Sec

[Whitters]

To calculate Plate scale
http://www.paul.whitmarsh.btinternet.co.uk/Astronomy/JavaScript/Plate_Scale.html

[Whitters]

Image is recording stars down to magnitude 15.6