Search found 408 matches

by Scrumpy
Thu Aug 23, 2007 5:15 pm
Forum: Telescopes and instruments
Topic: just an idea
Replies: 4
Views: 1644

An off-axis guider will do what you want.

Cheers,
Kieran
by Scrumpy
Thu Jul 26, 2007 6:50 pm
Forum: General chat
Topic: Does this type of thing make you suspicious on ebay
Replies: 14
Views: 4135

Re: Does this type of thing make you suspicious on ebay

A criminal syndicate in Hong Kong that targeted buyers on eBay has just been shut down: http://www.news.gov.hk/en/category/lawandorder/070726/html/070726en08002.htm http://www.rthk.org.hk/rthk/news/englishnews/20070727/news_20070727_56_419011.htm Considering the amount of money they made in six mont...
by Scrumpy
Wed Jul 18, 2007 8:23 pm
Forum: General chat
Topic: Lagoon Tonight. I'm a happy camper.
Replies: 8
Views: 2575

Re: Lagoon Tonight. I'm a happy camper.

Really nice image! I hope you don't mind a little critiquing from an astrophotographer of limited experience! The nebula seems a bit purplish to me and I think the reason for that is due to an unmodified 400D's internal filter which, apparently, attenuates part of the red region of the visible spect...
by Scrumpy
Wed Jul 18, 2007 7:32 pm
Forum: Absolute beginners
Topic: power supply?
Replies: 7
Views: 2781

Best to avoid mains outside if possible unless you have an observatory. This thread is 4 months old now but as there are recent comments I thought I'd better expand on my earlier suggestion. Kermit mentioned that he'd like a solution that could *also* "be useful round the house" so that's why I sug...
by Scrumpy
Tue Jul 10, 2007 12:40 pm
Forum: Telescopes and instruments
Topic: Bresser Skylux - how best to mount on a camera tripod?
Replies: 3
Views: 2009

Re: Bresser Skylux - how best to mount on a camera tripod?

Just had a thought...perhaps you can detach the EQ mount from the tripod and replace it with a lightweight alt-az head.

Kieran
by Scrumpy
Tue Jul 10, 2007 12:32 pm
Forum: Telescopes and instruments
Topic: Bresser Skylux - how best to mount on a camera tripod?
Replies: 3
Views: 2009

Re: Bresser Skylux - how best to mount on a camera tripod?

You could buy two separate tube rings and a metal dovetail plate which includes camera tripod threaded holes (3/8" or 1/4"). Of course, using a large camera tripod with a 3/8" threaded bolt and a camera head with a 3/8" threaded bolt is preferable for stability.

Kieran
by Scrumpy
Tue Jul 10, 2007 11:59 am
Forum: Telescopes and instruments
Topic: Baader Planetarium Phantom eyepiece's
Replies: 1
Views: 1272

I own a 6mm MC 'dome-top' Ortho and a 6mm BO/TMB FMC Planetary EP. The Baader GO is an orthoscopic eyepiece so it's characteristics will be very similar to other orthos i.e. narrow FOV, short eye relief, good contrast etc. The main difference is in the coatings. The Baader GO's should be on par with...
by Scrumpy
Sat Jul 07, 2007 3:51 pm
Forum: Absolute beginners
Topic: Dobsonians and Astropics???
Replies: 4
Views: 1574

Re: Dobsonians and Astropics???

Is there anyway that you can make a Dobsonian track so that it can used for Astropics. Yes but it is still largely a field which is DIY in nature. Mel Bartels is famous for his work on motorizing Dobs: http://www.google.co.uk/search?q=motorize+dobsonian+%22mel+bartels%22 Long exposures will require...
by Scrumpy
Thu Jul 05, 2007 6:05 pm
Forum: Telescopes and instruments
Topic: Focus wobble
Replies: 4
Views: 1843

A simple improvement is to add a larger focusing knob to one side of the focuser. You might be able to make a replacement for one of the knobs or make a push-fit enlarger by using a large, round, knurled lid from an empty liquid (detergent etc.) container, cutting a hole in the middle and pushing it...
by Scrumpy
Thu Jul 05, 2007 5:15 pm
Forum: Telescopes and instruments
Topic: Aluminium Case
Replies: 12
Views: 4507

Why did this happen?MF I've had the same thing happen to me a few years ago. The foam was black and it was actually lining part of a Nikon EM SLR. The foam just deteriorated from old age and exposure to sunlight (UV). The foam was probably made from PU (Polyurethane) or PE (Polyethylene). You can b...
by Scrumpy
Thu Jul 05, 2007 9:40 am
Forum: Telescopes and instruments
Topic: Guide scope questions
Replies: 3
Views: 1866

Re: Guide scope questions

I just noticed your other recent postings regarding the EQ3-2 and GOTO. If your budget can stretch to a CG-5 GT then go for it. It's definitely more capable than a EQ3-2 and it 'may' be able to support a larger and heavier scope if you decide to buy one in the future. An EQ3-2 can be hacked so that ...
by Scrumpy
Wed Jul 04, 2007 9:03 pm
Forum: Telescopes and instruments
Topic: Guide scope questions
Replies: 3
Views: 1866

Re: Guide scope questions

I think the SC1 mod is the long exposure mod. Considering the 130PM's weight and the EQ2's loading capacity, adding a slow 70 or 80mm achromatic refractor, plus tube rings, may make the platform less than ideal for imaging due to vibrations. Alternatively, a large finderscope might be of borderline ...
by Scrumpy
Wed Jul 04, 2007 8:24 pm
Forum: Telescopes and instruments
Topic: Astro Shed Questions....
Replies: 14
Views: 5081

I'm just bought a solar powered fan on eBay to fit in the roof. This will stop warm air 'pooling' in the roof during hot weather. Before I fit it I've got to take it apart and fit an override switch so that I can turn it off in the winter. You might be able to rig-up a heater powered by that solar ...
by Scrumpy
Wed Jul 04, 2007 8:02 pm
Forum: Telescopes and instruments
Topic: Aluminium Case
Replies: 12
Views: 4507

Just for your reference, the 'dimpled foam' is commonly known as egg crate foam and the 'main foam which is cut into little cubes' is commonly known as pick & pluck or pick 'n' pluck foam :)

That might help when you're shopping around for more in the future.

Cheers,
Kieran
by Scrumpy
Mon Jun 18, 2007 6:29 pm
Forum: Absolute beginners
Topic: Little Confused, very new!
Replies: 27
Views: 9193

Decent secondhand starter scopes appear for sale quite often so you might be able to pick one up for a price closer to your budget. However, I recommend that you contact your local astronomy club before buying a telescope and attend one of their meetings.

Cheers,
Kieran