Search found 67 matches

by rusirius
Fri Nov 23, 2012 3:04 pm
Forum: Computers and astronomy
Topic: Redshift Licence woes
Replies: 2
Views: 4816

Re: Redshift Licence woes

Well the upshot is that despite their valiant efforts, not even the nice people at Simmulation Curriculum could resolve the Starry Night night mode issue but I was kindly given an upgrade to the Plus version as a gesture of good will. The AllSky CCD image is brilliant but one thing to bear in mind i...
by rusirius
Tue Oct 16, 2012 8:09 am
Forum: Computers and astronomy
Topic: Redshift Licence woes
Replies: 2
Views: 4816

Re: Redshift Licence woes

Well, I ended up buying Starry Night Pro and I don't regret it. Its an excellent piece of software! Unfortunately, it has one niggle. The night vision mode is a bit strange in that it dims the screen but it does not turn red. Is this normal? I have been in touch with the vendor who says that it shou...
by rusirius
Wed Aug 29, 2012 9:59 am
Forum: General chat
Topic: How to change the password?
Replies: 1
Views: 743

How to change the password?

How do you change your account password on this site please?
I can't see an option anywhere to do that.
by rusirius
Fri Aug 17, 2012 4:08 pm
Forum: Light pollution
Topic: Road Lighting Could be dimmed.
Replies: 53
Views: 27314

Re: Road Lighting Could be dimmed.

The local paper carried an article the other day informing us that the city council will be installing 'low energey street lights' here in Leicester. Although it did not mention that they will be LED, it did say they will be white. I have already noticed that a particular stretch of country road (I ...
by rusirius
Sat Jul 14, 2012 11:45 am
Forum: Computers and astronomy
Topic: Problem running Stellarium on Windows 7
Replies: 4
Views: 6021

Re: Problem running Stellarium on Windows 7

You could try posting your query on the Stellarium forum:

http://sourceforge.net/projects/stellar ... rum/278769

Also, have a look at Stellarium's log.txt in %appdata%\Stellarium. It may give you a clue.
by rusirius
Thu Jul 12, 2012 3:43 pm
Forum: Telescopes and instruments
Topic: Calculating the FOV
Replies: 11
Views: 4323

Re: Calculating the FOV

David Frydman wrote:Yes a fine binocular indeed.
It should really be used in its natural environment.
Perhaps on your yacht cruising in the Med or just on the beach.
Had a look but can't find a Yacht on eBay for under £100....
Will take them to the seaside with me sometime though!
by rusirius
Thu Jul 12, 2012 11:13 am
Forum: Telescopes and instruments
Topic: Calculating the FOV
Replies: 11
Views: 4323

Re: Calculating the FOV

I still have reasonably good night vision but as you say, I could probably not make use of the full 7.1mm of that exit aperature! I also had a look through a pair of binoculars that have an exit pupil of around 6.3 mm and in terms of brightness there seemed to be a noticeable difference in favour of...
by rusirius
Thu Jul 12, 2012 8:37 am
Forum: Telescopes and instruments
Topic: Calculating the FOV
Replies: 11
Views: 4323

Re: Calculating the FOV

David, These do indeed have individual eye focussing, something I understand is preferred in astronomy? Its an interesting experience as I habitually kept wanting to reach for the focussing knob in the middle! Once set though, the focus does stay put and although I did not have a fully dark sky, bot...
by rusirius
Wed Jul 11, 2012 8:38 pm
Forum: Telescopes and instruments
Topic: Calculating the FOV
Replies: 11
Views: 4323

Re: Calculating the FOV

Thanks for both replies. The sky is relatively clear tonight - first time in weeks! If it stays like that until it gets dark and provided I can actually see the plough from here, then I will do the Mizar/Alkaid test. But thanks for the math examples and demonstrating that it works out to approx 7.1 ...
by rusirius
Wed Jul 11, 2012 7:27 pm
Forum: Telescopes and instruments
Topic: Calculating the FOV
Replies: 11
Views: 4323

Calculating the FOV

How do you calculate the FOV on a pair of binoculars.

I've just bought a used 7x50 pair and the description states 'Field at 1000 yds: 368 ft'. How do I convert this into degrees please?
by rusirius
Sat Jan 02, 2010 6:53 pm
Forum: General chat
Topic: The night of the Blue Moon and the Eclipse
Replies: 2
Views: 988

Thanks for the link Brian. It does answer the question and and provieds further interesting information.
by rusirius
Fri Jan 01, 2010 8:33 pm
Forum: General chat
Topic: The night of the Blue Moon and the Eclipse
Replies: 2
Views: 988

The night of the Blue Moon and the Eclipse

As many will know, on new year's eve was saw a blue moon and a partial lunar eclipse. A blue moon occurs every 2.7 years and a blue moon on new years eve occurs only once every 19 years. On this particular night of a blue moon we also had a partial lunar eclipse. This got me to wondering how often w...
by rusirius
Sat Dec 26, 2009 8:19 pm
Forum: Observing
Topic: Did I just see a fireball?
Replies: 9
Views: 1759

Did I just see a fireball?

Saw a very bright light through the patio door in my lounge which faces approximately in a SSE direction. The lounge lights were on at the time and I as sitting watching TV. Just caught a glimpse of a bright object through the 12in or so gap in the curtains. I would estimate the brightness as compar...
by rusirius
Thu Oct 08, 2009 5:34 pm
Forum: Observing
Topic: LCROSS Mission - will anyone be watching this?
Replies: 6
Views: 1306

LCROSS Mission - will anyone be watching this?

Tomorrow, 9th Oct, Nasa's Lcross mission will be carrying out two lunar impacts at the site of the Cabeus creater (due south) in the search for water on the moon. The detonations are schedued to occur at 4.30am PDT. Am I right in thinking this is 12:30pm BST? If so, then according to Stellarium the ...
by rusirius
Sun Aug 09, 2009 6:58 pm
Forum: Observing
Topic: A new dark spot on Jupiter
Replies: 3
Views: 950

A new dark spot on Jupiter

I was watching a recent Sky at Night today (repeated episode from earlier in the month) and there was a few minutes devoted to a new dark spot that had appeared close to one of the Jovian poles. Unfortunately because they showed images of the planet with the spot both near the top and then near the ...