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Steven Aggas
sage
Reged: 04/15/08
Posts: 287
Loc: Arizona
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Just a post on the use of my newly fabricated UHC clip-on filter glasses with rubber side blocks.... The California Nebula was an amazing sight to view as not-quite-naked-eye because it was filtered, but it was binocular at 1x and a very cool sight....
Steven
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Mr. Wizard
Elements in Harmony I, an 8"f6 German Equatorial - Stellafane Winner,
II a 20"f4.2 Newt-Dob - Astrofest Winner,
III a 6"f3.5 Finder/Newt-Dob, and
IV a 36"f4.5 Newt-Dob - "If it's up there, it's in here."
www.DarkSkyObserving.com
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LumpyDarkness
sage
Reged: 08/06/07
Posts: 308
Loc: San Francisco bay area
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Hey.... we used to do that with bicycle reflectors back in the 60's! Then something like that was patented by Navin R. Johnson ;-)
Really though, that's a good trick. I was at a dark site last year where the property owner had a pair of 2" H-Beta filters on some cut-outs on a shoe-box, which he'd hold over his face. Worked well....
I had a very good view of the Cal Neb last week at Mount Lassen in a TV-101 with a 35 Panoptic and H-Beta, 15X.
Thanks for the posting!
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Mark Wagner
18" f/4.5 Dob
The Astronomy Connection: Observing Reports - updated 11/21/08
Adventures In Deep Space: updated 11/12/08
Join us in June at California's Golden State Star Party
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David Knisely
Postmaster
Reged: 04/19/04
Posts: 6760
Loc: Beatrice, Nebraska
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Quote:
Just a post on the use of my newly fabricated UHC clip-on filter glasses with rubber side blocks.... The California Nebula was an amazing sight to view as not-quite-naked-eye because it was filtered, but it was binocular at 1x and a very cool sight....
Steven
Nice setup! It sure beats trying to hold the filters up to your eyes and block the light from the sides (I sit inside my darkened minivan when I try filters over my unaided eyes). You should try H-beta filters too, as they will help even more than the UHC on the California Nebula as well as things like Barnard's Loop and even the huge Lambda Orionis complex (at the head of Orion). Clear skies to you.
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David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
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Steven Aggas
sage
Reged: 04/15/08
Posts: 287
Loc: Arizona
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Quote:
Quote:
Just a post on the use of my newly fabricated UHC clip-on filter glasses with rubber side blocks.... The California Nebula was an amazing sight to view as not-quite-naked-eye because it was filtered, but it was binocular at 1x and a very cool sight....
Steven
Nice setup! It sure beats trying to hold the filters up to your eyes and block the light from the sides (I sit inside my darkened minivan when I try filters over my unaided eyes). You should try H-beta filters too, as they will help even more than the UHC on the California Nebula as well as things like Barnard's Loop and even the huge Lambda Orionis complex (at the head of Orion). Clear skies to you.
Thanks Dave, I chose UHC, over OIII or Hb alone, due to the Hb and the OIII lines included together in the bandpass. I figured this way it did not matter if the nebula is emitting one, the other or both. I'm really looking forward to getting back out there with my PSA and the goggles to see if the other faint fuzzies are visible filtered eyes!
Steven
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Mr. Wizard
Elements in Harmony I, an 8"f6 German Equatorial - Stellafane Winner,
II a 20"f4.2 Newt-Dob - Astrofest Winner,
III a 6"f3.5 Finder/Newt-Dob, and
IV a 36"f4.5 Newt-Dob - "If it's up there, it's in here."
www.DarkSkyObserving.com
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Steven Aggas
sage
Reged: 04/15/08
Posts: 287
Loc: Arizona
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Quote:
Really though, that's a good trick.
Thanks Mark. They were fun to build and one of the filters was just sitting in the eyepiece box unused, so... now it's used once again.
Steven
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Mr. Wizard
Elements in Harmony I, an 8"f6 German Equatorial - Stellafane Winner,
II a 20"f4.2 Newt-Dob - Astrofest Winner,
III a 6"f3.5 Finder/Newt-Dob, and
IV a 36"f4.5 Newt-Dob - "If it's up there, it's in here."
www.DarkSkyObserving.com
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cnstarz
professor emeritus
Reged: 12/22/07
Posts: 538
Loc: Kentucky, USA
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Steve,
Here's the setup you need to take it to the next level ... 4x30 with mask, and it'll take filters. web page
Here's an older CN Thread
Translated page Kasai Trading
Cheers,
Edited by cnstarz (08/06/08 09:50 PM)
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Steven Aggas
sage
Reged: 04/15/08
Posts: 287
Loc: Arizona
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Thanks cnstars. Hmmmm, I think I look geeky enough with the clip-on filters.... That my filters are close to my eyes and inside of my glasses the tfov is quite large, roughly 90 degrees. During daylight I could see the bandpass shift occurring, but the Cal Neb in Hb at night was still visible in direct vision and averted too. I've posted pictures of the easy construction on the CN atm board should someone want to build them too.
Steven
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Mr. Wizard
Elements in Harmony I, an 8"f6 German Equatorial - Stellafane Winner,
II a 20"f4.2 Newt-Dob - Astrofest Winner,
III a 6"f3.5 Finder/Newt-Dob, and
IV a 36"f4.5 Newt-Dob - "If it's up there, it's in here."
www.DarkSkyObserving.com
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GlennLeDrew
professor emeritus
Reged: 06/18/08
Posts: 577
Loc: Ottawa, Ontario, Canada
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I have a pair of 1.25" UHC's that were to be used in a now-abandoned medium size bino project. I'll have to give them a new lease on life!
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Home-made 11X50 right angle bino, 8.1 deg. FOV
Modified 26X100 bino, 3.5 deg. FOV
Mediocre minds discuss people. Good minds discuss events. Great minds discuss ideas.
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