Search found 1590 matches

by orly_andico
Mon Dec 31, 2018 5:03 am
Forum: General Astronomy
Topic: SQM Values for Mersing
Replies: 1
Views: 746

Re: SQM Values for Mersing

I would be quite interested as well. There's a way to measure skyfog using a DSLR:

http://www.pbase.com/samirkharusi/image/37608572
by orly_andico
Thu Sep 27, 2018 6:25 am
Forum: DIY Astronomy
Topic: Where can I buy cardboard tubes?
Replies: 3
Views: 497

Where can I buy cardboard tubes?

Singpost biggest diameter is 50mm / 2"

I bought a DK optical set from a guy in Romania that's 135mm in diameter so i need a 150mm diameter tube...
by orly_andico
Sat Aug 25, 2018 6:37 pm
Forum: DIY Astronomy
Topic: DIY 8"F/6 Planetary Scope from Shelves and IKEA table
Replies: 4
Views: 926

Re: DIY 8"F/6 Planetary Scope from Shelves and IKEA table

hmm so the hex things were the ikea shelves?

i have a lot of trouble cutting angles into plywood to make those hex shapes.. what i did before was a box.
by orly_andico
Sat Aug 25, 2018 6:33 pm
Forum: DIY Astronomy
Topic: 3D Printed Low Latitude Wedge for Tak EM1/10/11
Replies: 0
Views: 338

3D Printed Low Latitude Wedge for Tak EM1/10/11

After many (many) failed attempts and wastage of 3D filament, I've finally managed to produce a low-latitude wedge for Tak mounts.

There are two versions: one for 3-series Gitzo tripods, and one for 5-series Gitzo tripods.

https://www.thingiverse.com/thing:3065973
by orly_andico
Wed Aug 08, 2018 11:28 pm
Forum: Equipment Discussions
Topic: A Newbie's Impression of the Samyang/Rokinon 135 F2 for AP
Replies: 4
Views: 1174

Re: A Newbie's Impression of the Samyang/Rokinon 135 F2 for

I believe the Samyang is superior to the Canon 135/2L. I have the Samyang 12mm f/2 for Fuji and it's jaw-dropping. Easily as sharp as the "Fujicron" 23mm f/2. These Korean Samyangs are pretty good. The Canon 135mm f/2L is well known to not have good corner stars wide open. I actually have one but ha...
by orly_andico
Mon Aug 06, 2018 8:55 am
Forum: Buy and Sell
Topic: Giveaway: Hundreds of issues of Science - CLOSED
Replies: 10
Views: 2282

Re: Giveaway: Hundreds of issues of Science

thanks Wee Ern for getting the magazines to a good home...
by orly_andico
Mon Jul 23, 2018 3:35 am
Forum: Buy and Sell
Topic: Giveaway: Hundreds of issues of Science - CLOSED
Replies: 10
Views: 2282

Re: Giveaway: Hundreds of issues of Science

I'm aiming to get rid of all] of them (it's a pile probably 1.5 feet thick). Not really worth my time to hand over a few, and won't reduce the space currently consumed.
by orly_andico
Tue Jul 10, 2018 6:37 am
Forum: Equipment Discussions
Topic: Fabricating Low Latitude Wedges for Equatorial Mount
Replies: 3
Views: 975

Re: Fabricating Low Latitude Wedges for Equatorial Mount

I had a CGEM once and had a machining company in Malaysia make me the wedge. It cost over $300. There are some local companies in SG that can also make you a wedge, but expect similar pricing. I have a Tak EM-11 that can't reach 1 degree, I used to deal with this by shortening one tripod leg but it ...
by orly_andico
Sat May 26, 2018 12:00 am
Forum: Buy and Sell
Topic: MWTS: Lomo 80mm f/6 with Feathertouch focuser in WO tube
Replies: 0
Views: 521

MWTS: Lomo 80mm f/6 with Feathertouch focuser in WO tube

Withdrawn. I value "pretty rare" more than the money. Sorry folks.
by orly_andico
Sat Mar 17, 2018 4:09 am
Forum: Buy and Sell
Topic: WTB : Economical EQ mount
Replies: 1
Views: 478

Re: WTB : Economical EQ mount

Found one on CN.