Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: ApophisAstros on Jun 16, 2017, 22:51:32

Title: Messier 103
Post by: ApophisAstros on Jun 16, 2017, 22:51:32
2nd attempt , had some erroneous data in DSS. Took those frames out , still had 35 mins exposure at 800 ISO.
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10062/M103_-_OASB.jpg) (http://gallery.orpington-astronomy.org.uk/displayimage-1715.html&fullsize=1)
It is one of the most distant open clusters known, with distances of 8,000 to 9,500 light-years from the earth
At the top of the bright stars there is something called "Struve 131" which is a treble star.

Reprocessed with different settings in DSS.
Some nice orange stars, left aircraft in for effect.
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10062/M103__OAS.jpg) (http://gallery.orpington-astronomy.org.uk/displayimage-1716.html&fullsize=1)

Roger
Title: Re: Messier 103
Post by: MarkS on Jun 20, 2017, 19:24:34
The second one looks much better.

I'm slightly worried that you said "Reprocessed with different settings in DSS."

What settings are you changing to make so much difference?

Mark
Title: Re: Messier 103
Post by: ApophisAstros on Jun 20, 2017, 19:54:39
Cheers Mark
I just took out any bum subs and used DSS on same settings as first, about 8 subs ignored.
Roger
Title: Re: Messier 103
Post by: ApophisAstros on Jun 28, 2017, 10:39:56
Sorry for late reply , Mark.
I processed the right way the second time in DSS.
Roger