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0 |
590 |
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complex prom anim by
Pete Lawrence
Here's the final compilation of the complex prom frame set I took on
the 22nd April. Exposures were taken at 30s intervals.
I love the really thin line of...
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2 |
643 |
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Two expanding universe questions..... by
Pete L
Can anybody give me the answers to these two questions, please
1. Red shifts are used to decide how far away a distant object is.
It's difficult to imagine...
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1 |
659 |
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Barlow lenses by
BillyPIg
I'd appreciate a bit of advise on Barlows. I've got a WO Megrez 90 APO,
which can accept either a 2" or 1.25" Barlow; what would be best ? I only
have one...
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6 |
742 |
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April 29th 09 12:41 PM
by nancy
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0 |
694 |
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Solar continuum filter by
Robert Williams
Hi all,
I was wondering is anyone is using one of these filters to view the Sun (in
tandem with a white light filter).
e.g. ...
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2 |
792 |
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Sky@Night magazine CD by
John Davies
Hi Group, This is for UK readers I guess; the S@N CD contains release 5
of the free-ware stacking programme Registax. When you download this
there is a...
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April 20th 09 10:23 PM
by OG
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2 |
620 |
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Large first quarter lunar mosaic by
Pete Lawrence
This is the last of the set of 4 mosaics I did on the nights of the
30th & 31st March, 1st and 2nd of April 2009. It was also the most
time consuming being...
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April 18th 09 09:28 AM
by Jim
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5 |
1,058 |
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2 |
565 |
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Fitting an SCT focuser onto a refractor? by
Chris.B
Hi
Let's imagine you want to fit an SCT threaded focuser onto a
refractor...
The fine, female threaded Celestron/Meade SCT backplate aperture is
about ~77mm...
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0 |
808 |
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Large lunar mosaic (4.1 day old Moon) by
Pete Lawrence
Here's the Moon captured on the 30th March put together as a mosaic of
65 frames. Each was captured using a Lumenera SKYnyx 2-0M camera at
the prime focus of a...
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5 |
1,511 |
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Amateur image of Trans-Neptunian objects by
ukastronomy
Quaoar - 2002 LM60
Quaoar is a potential dwarf planet orbiting the sun in the Kuiper
belt. At the time of its discovery in 2002 it was the largest...
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0 |
613 |
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Immatterial expansion by
BURT
Space stretches everywhere. There is no prefered scale for a galaxy or
a quasar.
The quasar has two redshifts: gravity and distance.
Mitch Raemsch
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April 10th 09 08:14 PM
by BURT
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0 |
472 |
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Skyglow subtraction by
Jezzer
Hi,
I've been experimenting with my Canon 450d taking wide field shots
through a 70-300mm zoom lens. Living in West London means I quickly
end up with some...
( 1 2 3)
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April 8th 09 10:24 AM
by Jezzer
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25 |
1,549 |
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mounting telescope by
eoto
Hello there,
I'm wondering what mounting type I should buy: equatorial or az mounting.
I have noticed that an equatorial mounting needs to be aligned to the...
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April 7th 09 01:23 PM
by Jezzer
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9 |
779 |
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New Robin Hood-Astronomical Continuity Boob by
Mike Dworetsky
I missed the first episode of this, but it was repeated on BBC3 tonight.
The impossible rescue takes place during a total solar eclipse (handy that)
over...
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4 |
486 |
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5.1 day hi-res lunar mosaic by
Pete Lawrence
Here's another hi-res lunar mosaic this time composed of 78 frames.
Each frame was distilled from an AVI via Registax 5. All 78 frames
were manually assembled...
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7 |
776 |
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ZZ Car by
James E
Hi there.
I've been wondering what has happened to the designation "ZZ Car". I'm
used to see it in the literature as identical to "l Carinae". If you
make a...
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4 |
765 |
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ZZ Carinae by
James
Hi there.
I've been wondering what has happened to the designation "ZZ Car". I'm
used to see it in the literature as identical to "l Carinae". If you
make a...
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April 4th 09 08:08 AM
by James
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0 |
554 |
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0 |
765 |