Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: ApophisAstros on Apr 26, 2017, 07:12:27

Title: My First Star Trail
Post by: ApophisAstros on Apr 26, 2017, 07:12:27
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10062/Startrails2.jpg)
http://gallery.orpington-astronomy.org.uk/albums/userpics/10062/Startrails2.jpg (http://gallery.orpington-astronomy.org.uk/albums/userpics/10062/Startrails2.jpg)
Canon EOS 750D - modified for astronomy.
ISO - 640
Lens Aperture 4.50
640 x 15 second subs
Cmos Temp seemed to stay at 15*c until the end although a lot colder outside.
Used APT and have paid for it as its brilliant.
Need help with the lines and dots
Roger
Title: Re: My First Star Trail
Post by: Carole on Apr 26, 2017, 09:19:41
That's brilliant Roger, if there is nothing worth imaging DSO wise, why not do a star trail.

Good focus (presume you now have the Bahtinov mask) and good colour in the stars.

The dots top right are a plane's flashing light passing through the FOV. 
Centre is a shooting star I think.
Bottom right a satellite probably coming in at the end of your imaging session, or going out at the beginning.

Good processing too, what did you use?

Carole
Title: Re: My First Star Trail
Post by: Carole on Apr 26, 2017, 09:22:38
Actually correction, bottom right is another plane as you can see intermittent flashing lights there as well.

Carole
Title: Re: My First Star Trail
Post by: ApophisAstros on Apr 26, 2017, 11:28:30
Thanks Carole,
Yes i thought they might be , but is that vertical splash of light under Polaris an Iridium Flare or is it a tad too long?
I just ran all 640 pictures through DSS on the settings Duncan recommended.

Roger
Title: Re: My First Star Trail
Post by: Carole on Apr 26, 2017, 18:32:03
It could be an iridium flare. 

Carole
Title: Re: My First Star Trail
Post by: Kenny on Apr 29, 2017, 16:59:36
Great first attempt Roger.

I'd definitely say and Iridium flare rather than a shooting star.