Refractors : Refractors

Activity within 7 days:

Description

This site is for all refractor users, and those interested in them, to enjoy. Discussions of equipment & observing are encouraged. Owners of all types & apertures are welcome!

Members are encouraged to post and take part in discussions as you will learn more that way. An active group is also more interesting to be a member of. Please be mindful of your fellow members when posting to the site - we all want a friendly interactive group here. Posts of a partisan political or totally non astronomical nature are not acceptable and are subject to removal.

Manufacturers, dealers and their employees are asked to identify their affiliations when posting regarding their own or competitors products.

New member's messages are moderated so do not bother trying to spam here.

The SV50ED - a scope for the amateur astronomer who has everything, but hates extravagant gifts. Call it an Austerity APO.

The photo will change in a few weeks. If you know more about this type of scope, be sure to post about it.

Membership in Grouply, or a similar phishing group, is grounds for a member being banned to protect other members privacy.

Rich Wood - astronut1001 - Owner
Darren Hennig - doktorphoton - Moderator
David Sherfy - warpedcorp - Moderator
Stewart Waters - olympus_mons_observatory - Moderator
Doug Baikey - truckstopastronomer - moderator

Most Recent Messages

(View All)
(Group by Topic)

Advanced

Start Topic

Re: Herschel Wedge Construction Question ... The best reason I can think of is that it wouldn't be worth the effort. You'd still need additional filtering and I suspect an ND3 filter isn't any cheaper Posted - Sat May 26, 2012 4:03 am	William Hamblen wrhamblen Offline Send Email
Re: German Translation Please! ... I bought the APM model specifically because it came in a 1-1/4" eyepiece barrel version. I'm using a refactor with a 1-1/4" eyepiece holder. There is no Posted - Sat May 26, 2012 3:42 am	William Hamblen wrhamblen Offline Send Email
Herschel Wedge Construction Question With the number of knowledgeable opticians who are group members, a question for all of you. Could a Herschel wedge be made with a multicoated front prism face Posted - Fri May 25, 2012 9:58 pm	Rich W astronut1001 Offline Send Email
Re: German Translation Please! ... If the working surface of the Lunt wedge is better optically, ten it will work better than it's competitor if all other factors are the same. Valery. Posted - Fri May 25, 2012 7:02 pm	ntvru Offline Send Email
Re: German Translation Please! Markus; Thank you for the article background and explanation of what it says along with your observations regarding inaccuracies and needed corrections. Very Posted - Fri May 25, 2012 5:23 pm	Rich W astronut1001 Offline Send Email
Add Refractors to your personalized My Yahoo! page What's This?

Message History

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2012	20	64	47	105	60
2011	99	81	44	42	73	130	79	68	17	9	16	10
2010	70	91	96	108	81	175	71	60	58	94	155	83
2009	274	80	117	95	205	129	358	159	50	60	66	31
2008	390	420	199	267	374	262	152	209	294	113	62	76
2007	733	279	429	285	368	179	323	270	1121	1210	422	330
2006	26	17	20	14	14	17	8	7	614	1781	1256	1043
2005	159	158	110	101	63	76	59	73	38	49	46	42
2004	155	231	101	73	118	100	72	85	73	151	93	117
2003	180	147	154	95	107	218	222	82	194	150	86	32
2002	357	326	235	226	171	195	142	129	290	253	251	248
2001	627	346	825	669	521	461	406	385	220	305	543	398
2000								94	700	743	285	681

Yahoo! Groups

Group Information

Yahoo! Groups Tips

Did you know...

Home

Activity within 7 days:

Description

Most Recent Messages

Message History