Search found 5708 matches

by brian livesey
Thu Apr 22, 2021 9:20 pm
Forum: Observing
Topic: Daytime Observing
Replies: 4
Views: 21

Re: Daytime Observing

It’s held up by faith.
by brian livesey
Thu Apr 22, 2021 6:06 pm
Forum: Telescopes and instruments
Topic: Which telescope to buy? This may help.
Replies: 7
Views: 603

Re: Which telescope to buy? This may help.

A focal reducer can be used with an SCT John. Apparently, this type of ‘scope needs a longer cool down time than for a Newtonian.
by brian livesey
Thu Apr 22, 2021 5:44 pm
Forum: Gallery
Topic: Sun in Ha - 22 April
Replies: 2
Views: 29

Re: Sun in Ha - 22 April

A good image Brian. The proms shown don’t seem to have changed much earlier this evening, when I observed them through the PST double-stacked with a Lunt LS50f.
by brian livesey
Thu Apr 22, 2021 6:47 am
Forum: Observing
Topic: Lyrid Meteor Shower
Replies: 8
Views: 57

Re: Lyrid Meteor Shower

Then, there’s Attenborough’s “meteor” that wiped out the dinosaurs :roll: .
by brian livesey
Tue Apr 20, 2021 8:40 pm
Forum: General chat
Topic: Space Junk Is Our New Tragedy of the Commons
Replies: 2
Views: 69

Re: Space Junk Is Our New Tragedy of the Commons

Apparently, over 60% of satellites are “commercial”, so we can reckon that a proportion of them are for trivial purposes such as the gambling industry.
Now, it’s being said that there are so many rocket launches that they contribute significantly to global warming.
by brian livesey
Tue Apr 20, 2021 5:53 pm
Forum: Astrophysics
Topic: The Webb Telescope and dark matter
Replies: 0
Views: 21

The Webb Telescope and dark matter

Researchers at Durham University with take part in an international project, the Cosmos-Webb programme, that will survey a region near the constellation Sextans to trace the relationship between dark matter and remote galaxies farther back in time. They will utilise the James Webb Space Telescope (J...
by brian livesey
Mon Apr 19, 2021 3:35 pm
Forum: Gallery
Topic: The Sun - 18th April - Just for a laugh !
Replies: 2
Views: 21

Re: The Sun - 18th April - Just for a laugh !

That 88mm refractor yields good images Cliff. Some of your gear is from Optic Star. Due you know if the shop is still there, or is it all sold on the Web these days? I found the shop interesting to browse through. I purchased a PST and zoom eyepiece to use with it from them.
by brian livesey
Mon Apr 19, 2021 3:25 pm
Forum: Observing
Topic: Vesta in April
Replies: 12
Views: 207

Re: Vesta in April

That’s a coincidence Mike. I too am suffering from severe vertigo, and seem to have the symptoms of ME. A blood test is being analysed. Not good news for skywatching. There’s the option of lying on our backs to get covered in slugs :wink: .
by brian livesey
Mon Apr 19, 2021 3:13 pm
Forum: Space exploration
Topic: Mars ‘copter technical hitch
Replies: 2
Views: 92

Re: Mars ‘copter technical hitch

The first successful test flight, lasting under a minute, was performed with the ‘copter at 8:30am our time. More flights are to follow when the data from the first flight has been analysed. The flight established that lift is possible for a drone in Mars’s rarified atmosphere with the ‘copter’s rot...
by brian livesey
Fri Apr 16, 2021 1:41 pm
Forum: Observing
Topic: Jupiter + Saturn from bedroom window
Replies: 14
Views: 198

Re: Jupiter + Saturn from bedroom window

When I observe Saturn with a low magnification, it appears oval-shaped rather than as a disc. Saturn’s light seems tired compared to Jupiter’s brilliance, so it might have had a nightcap effect for Mike.
by brian livesey
Tue Apr 13, 2021 8:22 pm
Forum: Space exploration
Topic: Mars ‘copter technical hitch
Replies: 2
Views: 92

Mars ‘copter technical hitch

NASA has announced that its Ingenuity helicopter has had its first attempted flight into Mars’s rarified atmosphere delayed until at least tomorrow, due to a technical problem. The problem was discovered when the ‘copter was having its rotators tested. If successful, Ingenuity will be the first mach...
by brian livesey
Tue Apr 13, 2021 5:40 am
Forum: Gallery
Topic: Sunspots
Replies: 2
Views: 1100

Re: Sunspots

Looks like a Sun flower, which is appropriate, don’t you think?
by brian livesey
Mon Apr 12, 2021 6:03 pm
Forum: Gallery
Topic: The SUN - 11th April
Replies: 3
Views: 96

Re: The SUN - 11th April

Does the white spot on the Sun have an official classification? It looks like a flaring site.
by brian livesey
Mon Apr 12, 2021 12:50 pm
Forum: Visual Satellite Observing
Topic: ISS leaking from old age ..
Replies: 2
Views: 103

Re: ISS leaking from old age ..

They could replace modules at the station with new ones. Originally, the ISS was intended to be considerably bigger, but mounting costs set a limit to its eventual size.
by brian livesey
Mon Apr 12, 2021 12:42 pm
Forum: General chat
Topic: Another possible meteorite fall
Replies: 4
Views: 200

Re: Another possible meteorite fall

Early life was wearing hard hats at the time :wink: . Seriously though, a current theory for the origin of life says that the molten masses below craters formed by asteroid strikes cooled and created geothermal springs, rich in the nutrient chemicals necessary for life. Apparently, it only happened ...