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New Naked Eye Comet - 17/P Holmes
- phoenix
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- Red Giant
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17 years 1 month ago #54038
by phoenix
Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/
Replied by phoenix on topic Re: New Naked Eye Comet - 17/P Holmes
Dave,
I may be preaching to the wise on this but if you know the image scale with the camera, ie arcsec per pixel, then you can measure the angular distance from an image and use this with the published distance to the object in the small angle formula
astronomyonline.org/Science/SmallAngleFormula.asp
I may be preaching to the wise on this but if you know the image scale with the camera, ie arcsec per pixel, then you can measure the angular distance from an image and use this with the published distance to the object in the small angle formula
astronomyonline.org/Science/SmallAngleFormula.asp
Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/
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- phoenix
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- Red Giant
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17 years 1 month ago #54039
by phoenix
Seanie,
just wait til the end of December when it skirts M33, should be a lovely photo op.
Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/
Replied by phoenix on topic Re: New Naked Eye Comet - 17/P Holmes
Tuttle might as well just give up!
Seanie,
just wait til the end of December when it skirts M33, should be a lovely photo op.
Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/
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- dave_lillis
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- Super Giant
17 years 1 month ago #54040
by dave_lillis
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Replied by dave_lillis on topic Re: New Naked Eye Comet - 17/P Holmes
Hi Kieran,
For my SCT setup its even more painful then that as the arc second per pixel is not a constant, it changes depending on the distance between the back of the scope and the camera, the only way I'd be able to figure the FOV of the image is to open starrynight for that FOV and measure it, I'll get around to doing that during the week maybe.
For my SCT setup its even more painful then that as the arc second per pixel is not a constant, it changes depending on the distance between the back of the scope and the camera, the only way I'd be able to figure the FOV of the image is to open starrynight for that FOV and measure it, I'll get around to doing that during the week maybe.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
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- phoenix
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17 years 1 month ago #54041
by phoenix
Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/
Replied by phoenix on topic Re: New Naked Eye Comet - 17/P Holmes
Dave,
Who said astronomy was a hobby, sometimes you have to work at it :lol: . In the Dob is it not starting to blind you?
Who said astronomy was a hobby, sometimes you have to work at it :lol: . In the Dob is it not starting to blind you?
Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/
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- Seanie_Morris
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17 years 1 month ago #54053
by Seanie_Morris
Then I take that back. Lets hope that a nice wide field shot opportunity beckons with my 300mm lens!
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
Replied by Seanie_Morris on topic Re: New Naked Eye Comet - 17/P Holmes
Tuttle might as well just give up!
Seanie,
just wait til the end of December when it skirts M33, should be a lovely photo op.
Then I take that back. Lets hope that a nice wide field shot opportunity beckons with my 300mm lens!
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
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- Frank Ryan
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- Super Giant
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17 years 1 month ago #54063
by Frank Ryan
Or wait further until the 3rd of May when it encounters M38
My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers
Replied by Frank Ryan on topic Re: New Naked Eye Comet - 17/P Holmes
Tuttle might as well just give up!
Seanie,
just wait til the end of December when it skirts M33, should be a lovely photo op.
Or wait further until the 3rd of May when it encounters M38
My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers
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