by Case » Thu Dec 08, 2016 1:02 pm
One of the more significant deep sky objects in the constellation
Canes Venatici (the Hunting Dogs) is the
Whirlpool Galaxy (M51), the merger of the blueish spiral and the yellowish companion. Nice to see the galaxy in this portrait. Note how “solid”/even level the galaxy disk looks in todays APOD, compared to other images of M51 with contrast adjusted to show detail in the spiral arms and the “gaps” between them.
Mr. Chambó
mentions using a Mayhill, New Mexico (USA) facility, which I interpret as the
New Mexico Skies Observatories, which houses quite a few remotely operated telescopes, including for some
big names.
He also mentions L:3×180s Bin1 + RGB:1x60s Bin2, which is only 10 minutes of exposure time combined, if I understand the notation correctly.
Some comets move relatively fast compared to the background star field. Astrophotographers and their software may have to process the comet(s) separately from the “static” star field, if the comets move noticeably during imaging. I think this would be needed for “close-ups” of a (small) comet. For “wide” field photography and short exposure time, this special treatment may not be necessary, right?
One of the more significant deep sky objects in the constellation [url=https://en.wikipedia.org/wiki/Canes_Venatici]Canes Venatici[/url] (the Hunting Dogs) is the [url=https://en.wikipedia.org/wiki/Whirlpool_Galaxy]Whirlpool Galaxy (M51)[/url], the merger of the blueish spiral and the yellowish companion. Nice to see the galaxy in this portrait. Note how “solid”/even level the galaxy disk looks in todays APOD, compared to other images of M51 with contrast adjusted to show detail in the spiral arms and the “gaps” between them.
Mr. Chambó [url=http://cometografia.es]mentions[/url] using a Mayhill, New Mexico (USA) facility, which I interpret as the [url=http://www.nmskies.com/]New Mexico Skies Observatories[/url], which houses quite a few remotely operated telescopes, including for some [url=http://www.nmskies.com/ourclients.html]big names[/url].
He also mentions L:3×180s Bin1 + RGB:1x60s Bin2, which is only 10 minutes of exposure time combined, if I understand the notation correctly.
Some comets move relatively fast compared to the background star field. Astrophotographers and their software may have to process the comet(s) separately from the “static” star field, if the comets move noticeably during imaging. I think this would be needed for “close-ups” of a (small) comet. For “wide” field photography and short exposure time, this special treatment may not be necessary, right?