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New generic Venus Filter

24 replies to this topic

#21 Reed F. Curry

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Posted 01 December 2018 - 15:21

The Astrodon Gen 2 U filter looks good to me. The Baader U is $387.00 (https://optcorp.com/...us-filter-2inch) but the Astrodon is only $13 more and has better specs, imo. The transmission curve of the Astrodon in the 320-385nm range is clearly superior to the Baader U.

Does anyone here have an Astrodon Gen 2 U?
Best regards,
Reed
http://www.uvroptics.com

#22 dabateman

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Posted 02 December 2018 - 05:44

Reed,
Where are you finding it at $13 more?
I see the new Sloan 2 at $500 and the older one at $462 from your link.
Still all too expensive. Almost makes me wish I bought it at $300 back in October.
These may just be Christmas mark ups. Maybe it come down again in March for the blossom session.

Andrea,
I email directly to the UK store. They are sold out now. But they did confirm its an Optolong filter. I look forward to NA_joey tests. At around $70, thats doable, but I would want nice contrast like the Baader. I have some nice tight band filters, but the Baader seems to have the best contrast.

Edited by dabateman, 02 December 2018 - 05:46.


#23 WiSi-Testpilot

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Posted 02 December 2018 - 10:22

Reed probably took the $ 400 off my post.
I found the price here:

https://www.highpoin...nmounted-u2-50r

Best regards,
Wilhelm

#24 Reed F. Curry

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Posted 02 December 2018 - 16:38

David,

The Highpoint site Wilhelm listed is the source of my $400.00 price.
Check your PM for a note.
Best regards,
Reed
http://www.uvroptics.com

#25 dabateman

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Posted 03 December 2018 - 19:14

I don't know if any one has tested the new Sloan Gen 2 filter. But deep diving down to old filter tests, I found this thread with the Gen 1:
http://www.ultraviol...s-100-closeout/

Looks like despite the ideal spectrum Astrodon provided, it leaks quite a bit in the visible and IR. I may be more skeptical about the Gen 2 now. The real spectrum is provided in post #16, by lost cat.

Edited by dabateman, 03 December 2018 - 19:17.