Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: RobertM on Jul 03, 2008, 01:04:18

Title: Possible Nocticulent clouds ?
Post by: RobertM on Jul 03, 2008, 01:04:18
These appeared much later than the higher clouds so could they be nocticulent clouds ?  They certainly were moving fast and at extremely high altitude.

(http://gallery.orpington-astronomy.org.uk/albums/userpics/10031/normal_nocticulent1_red.jpg)

http://gallery.orpington-astronomy.org.uk/albums/userpics/10031/normal_nocticulent2_red.jpg (http://gallery.orpington-astronomy.org.uk/albums/userpics/10031/normal_nocticulent2_red.jpg)

Title: Re: Possible Nocticulent clouds ?
Post by: RobertM on Jul 03, 2008, 08:05:58
Sorry I think these are just pretty clouds ....  :oops:
Title: Re: Possible Nocticulent clouds ?
Post by: Fay on Jul 03, 2008, 08:24:11
Bad sign, Robert, talking to yourself & answering your own questions............................I should know
Title: Re: Possible Nocticulent clouds ?
Post by: RobertM on Jul 03, 2008, 08:40:39
Fay, yes sorry you are right but I felt I had to correct myself before someone else did ;)

Spent over 2 hours doing polar alignment last night and it nearly drove me mad !  At least I hope to have solved some field rotations problems so should be ready to image on the next clear night ... hopefully the fireworks galaxy ... unless anything else thwarts my attempts.
Title: Re: Possible Nocticulent clouds ?
Post by: Fay on Jul 03, 2008, 08:51:28
Looks like tonight is the night, Robert. I will be interested in your image of Firework galaxy.
Title: Re: Possible Nocticulent clouds ?
Post by: Rick on Jul 03, 2008, 09:10:10
Yep, those are just high normal clouds of the kind that'd appear dark if there were noctilucent clouds behind them. Noctilucent clouds are usually a blueish white.
Title: Re: Possible Nocticulent clouds ?
Post by: Mike on Jul 03, 2008, 10:09:34
No these are not noctilucent clouds. Noctilucent clouds are very obvious and look backlit. Plus, due to their extreme altitude tend to move quite slowly.