AXAF
sage
Reged: 09/15/04
Posts: 234
Loc: New England
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I'm inching closer to purchasing a Baader Herschel Wedge. My only question is, can I get away with using the visual unit for webcam imaging if I decide to go that route. Or, is it best to go with the photographic unit, which I assume can be adjusted for visual use?
-Gary
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Torus Optics 32cm f/6 Dob
Osypowski Equatorial Platform
Fujinon 10x70
Coronado PST plus SolarMax 40 filter
Vixen GPD2 on a Berlebach Tripod
StellarVue SV90T
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nini et titi
member
Reged: 08/27/09
Posts: 88
Loc: Mesnil Panneville ,Normandy,FR...
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Hi Gary
I have since a few weeks the photographic version of the Baader Wedge
the package contains :the Wedge ,a continium filter (for contrast),a 3.0 neutral density filter (fixed to the wedge) and three others density filters for adjust luminosity in visual use and for photo
Last Monday I took pictures of AR11025 with it ,and visualy it's was without danger (looking with Télévue 8/24 zoom and the 6 inch apo refractor!!)
Etienne
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Tom and Beth
scholastic sledgehammer
Reged: 01/08/07
Posts: 929
Loc: Tucson, AZ
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The diff between the two are the additional filters Etienne mentioned. You could probaly skip the Continuum and use a Wratten 58 instead saving some money. The various ND filters are worth every penny, especially if you are visual.
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ragebot
Carpal Tunnel
Reged: 08/26/05
Posts: 1672
Loc: Tallahassee, FL, USA
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I have one of the APM wedges (after I returned the Baader 2in wedge because it would not come to focus on my OTA and the vendor confirmed the Baader wedge wont come to focus on many popular OTAs) as well as a continuum filter and a ND filter.
My advice would be to get a variable polarizing filter no matter which way you go.
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Meade ETX 90, Meade AR5, Orion ED80, Atlas GT, 8 in Newt, Coronado DS SM40, Garrett 10.5X70, Sigma SD10, SD14, Canon 1D2, Xti, Nikon CP4500, C-14
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colinsk
Carpal Tunnel
Reged: 01/17/08
Posts: 2150
Loc: CA
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Quote:
My advice would be to get a variable polarizing filter no matter which way you go.
Since the wedge is partially polarizing you can just put a single polarizer on the EP and rotate it to adjust the brightness.
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Mahalo,
Colin Kaminski
Coulter 10.1" Dobsonian
TV-76/Baader Film White Light
LS60T/DS50/FT/BF1200
LDX-75
AT Voyager
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3455
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The Baader ideed won't come to focus in certain/many(?) telescopes due to the lengthened light path the Baader presents. Baader themselves state as much. I bought mine with the intent that if I had to, I'd cut the tube of one of my 2 80mm Planet Hunters down to use with it. So far I have tried mine in an S/V 80mm NHNG and an 80mm Burgess Planet Hunter and it comes to focus just fine. Next to try are my Meade 102ED APO and Burgess 127/8.
The others are correct, the only difference between the 2 is the 3 additional ND filters. A single polarizing filter- in conjunction with the wedge as Colin stated will also work.
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Wes
Atlantic Beach, FL
Some bino’s from Miyauchi 5x32 Binon's up through Garrett 20x110 Signature's,
Some telescopes from a Stellarvue 80mm NHNG up through a couple of 8” reflectors…
And a wonderful 4.25" Delmarva Shiefspiegler!
Some good friends, made here on C/N.
Oh- several cats and a wonderful wife!
Anyone want a cat???? :-O
"When your work speaks for itself- Don't Interrupt" -Gamble Rogers
Edited by Wes James (09/04/09 02:47 PM)
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Ralph Marantino
Postmaster
Reged: 05/01/05
Posts: 6330
Loc: Old Bridge, New Jersey
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Save a LOT of money go with a LUNT or APM wedge.I have used APM and Baader externsively and there ain't no difference in the vue just the unit's finish.
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Lunt H-alpha LS100THa/B3400
Rockland Astronomy Club
Member BAA Solar Section
Central Appalachian Astronomy Club
Astronomical League
DSPST,PST & 70mm Coronado Cal K telescope.2.2A
Zeiss 2 inch prism diagonal&Zeiss Zoom EP
2inch APM Herschel Wedge in a 94mm F7 Brandon
14.5 inch f4.2 Starmaster Dob(Zambuto mirror)
TeleView Genisis SDF with 1000 Oaks Glass filter
Zeiss 63mm f13.5 refractor 1000 Oaks Glass filter
Itty Bitty Solar Radio Telescope.
LHRIES Lite Solar Spectrometer
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Doug D.
Carpal Tunnel
Reged: 08/23/05
Posts: 1861
Loc: Virginia
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Its been so long since I've had occasion to use my Baader wedge that I'd almost forgotten if I was remembering correctly, but as Colin has already pointed out the properties of the wedge allow you to add a single polarizing filter to the optical chain. If you add it to a threaded eyepiece for visual or webcam barrel for imaging, you can change brightness by rotating. It works well and thus makes the visual "version" more versatile..
As for coming to focus with the Baader there are other ways to potentially fix this without cutting your tube! For example, the 2" EP holder that comes with the wedge is massive and with the right adapters you can replace this with a much shorter 1.25" holder like the Baader click stop ep clamp. This might be sufficient for you to reach focus if in fact you do have a problem with your OTA. I always wondered who would be using a 2" EP with a wedge?
Personally, I like the fit, finish, design features (e.g., heat baffle), T2 system compatability, and quality of the Baader unit. For me, it was worth the extra cost over the APM. Whether the Zeiss prism in the Baader offers you a better view/image than the APM/LUNT, I don't know but I would think the only way to tell for sure would be a side by side real time comparison. White light detail is subtle.
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Hooville
AP 105EDF f/6 Traveler; AP 140 EDF StarFire f/7.5; TV 76 f/6.3 with Solarscope SF70 filter; Solarscope Solarview 50; Coronado CaK 70; Orion XT-10; Baader Mk V & ZAO II's; Half-Hitch Mk II; Astrotrac TT320X, pier & wedge; AP Mach1GTO; PGR Flea 2
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3455
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Good comments, Doug... for me, the heat disapating shield was kind of the dealmaker for me. And you're correct, thanks for the reminder about replacing the eyepiece holder. You're correct, a 2" eyepiece for solar wedge observing is kind of an unlikely scenario.
Anyone have any specific part numbers for a better (i.e., shorter) 1.25" adaptor to put on the Baader wedge housing? Wes
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Doug D.
Carpal Tunnel
Reged: 08/23/05
Posts: 1861
Loc: Virginia
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Wes, according to the AlpineAstro site you need a T2-27 adapter plus the T2-08 1.25" clickstop. I'm pretty sure that is exactly how mine is configured. I'd be happy to post a picture tonight if anyone is interested.
I really wish Baader would offer this configuration as an optional version - plus, it would probably save a few bucks. as it is, the conversion makes an already expensive product even more pricey.
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Hooville
AP 105EDF f/6 Traveler; AP 140 EDF StarFire f/7.5; TV 76 f/6.3 with Solarscope SF70 filter; Solarscope Solarview 50; Coronado CaK 70; Orion XT-10; Baader Mk V & ZAO II's; Half-Hitch Mk II; Astrotrac TT320X, pier & wedge; AP Mach1GTO; PGR Flea 2
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3455
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Doug-
I'd appreciate pic's... sounds like a smart choice. You're correct- it should be offered as an option. Or, perhaps it should be supplied that way standard, with the 2" eyepiece adaptor offered as the option!
Wes
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ragebot
Carpal Tunnel
Reged: 08/26/05
Posts: 1672
Loc: Tallahassee, FL, USA
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The nice thing about a variable polarizer is that it is not a one trick pony. You can use on other OTAs; like when you are observing the moon.
Multi-tasking rules.
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Meade ETX 90, Meade AR5, Orion ED80, Atlas GT, 8 in Newt, Coronado DS SM40, Garrett 10.5X70, Sigma SD10, SD14, Canon 1D2, Xti, Nikon CP4500, C-14
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3455
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"Multi-tasking rules."
Absolutely!
Doug- does the 1.25" adapted setup for the wedge cause any issues with filters? In other words, I've been using a 1.25" adaptor in the 2" as supplied- with a U/V filter added as well... will that still work with the clickstop - and the stock 2" Continuium/ND filters work also in the T2-27 adaptor?
Wes
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Doug D.
Carpal Tunnel
Reged: 08/23/05
Posts: 1861
Loc: Virginia
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Wes, the adapted set should cause no problem with filters - you are only replacing a threaded ring adaptor for attaching the 2" holder with a comparable ring for attaching the 1.25" holder. I took 3 quick photos that should help. First, here is the wedge with the 1.25" click stop attached (my default).
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Hooville
AP 105EDF f/6 Traveler; AP 140 EDF StarFire f/7.5; TV 76 f/6.3 with Solarscope SF70 filter; Solarscope Solarview 50; Coronado CaK 70; Orion XT-10; Baader Mk V & ZAO II's; Half-Hitch Mk II; Astrotrac TT320X, pier & wedge; AP Mach1GTO; PGR Flea 2
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Doug D.
Carpal Tunnel
Reged: 08/23/05
Posts: 1861
Loc: Virginia
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Here is the 1.25" clickstop (removed) sitting next to the 2" with the supplied 1.25" adapter in place, which is probably what most of us would be using for 1.25" EPs with the stock wedge (although you could certainly use a much narrower profile 1.25" EP adapter to get you closer). It is kind of ridiculous isn't it? In any event, there is your back focus distance problem probably solved for some folks...! Both the click stop and the 2" holder sit flush on the wedge housing (with their respective adapter ring and attached filters hanging below - not shown here).
My 2" adapter now serves as a nicely machined paperweight!
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Hooville
AP 105EDF f/6 Traveler; AP 140 EDF StarFire f/7.5; TV 76 f/6.3 with Solarscope SF70 filter; Solarscope Solarview 50; Coronado CaK 70; Orion XT-10; Baader Mk V & ZAO II's; Half-Hitch Mk II; Astrotrac TT320X, pier & wedge; AP Mach1GTO; PGR Flea 2
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Doug D.
Carpal Tunnel
Reged: 08/23/05
Posts: 1861
Loc: Virginia
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Here is the click stop again, unscrewed and sitting over the adapter ring with the continuum and ND3 screwed into the ring. You can see how the clickstop would cover up the top threaded region and the larger threaded region with filters would be below wedge housing surface. There is a thin "lip" you can see bewteen both threaded segments that would sit flush with the wedge housing. I'd have to dig up the threaded ring for the stock 2" holder to confirm, but I think if anything, the adapter ring for the 1.25 clickstop might actually give the filters more room..??
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Hooville
AP 105EDF f/6 Traveler; AP 140 EDF StarFire f/7.5; TV 76 f/6.3 with Solarscope SF70 filter; Solarscope Solarview 50; Coronado CaK 70; Orion XT-10; Baader Mk V & ZAO II's; Half-Hitch Mk II; Astrotrac TT320X, pier & wedge; AP Mach1GTO; PGR Flea 2
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3455
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Thanks, Doug-
I appreciate the pic's so much... worth a thousand words, so someone once said!
I ordered the pieces... Thanks again!
Wes
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Doug D.
Carpal Tunnel
Reged: 08/23/05
Posts: 1861
Loc: Virginia
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you're very welcome Wes - I'm glad it helped. Hopefully, it didn't deviate too far from the OP's specific question.
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Hooville
AP 105EDF f/6 Traveler; AP 140 EDF StarFire f/7.5; TV 76 f/6.3 with Solarscope SF70 filter; Solarscope Solarview 50; Coronado CaK 70; Orion XT-10; Baader Mk V & ZAO II's; Half-Hitch Mk II; Astrotrac TT320X, pier & wedge; AP Mach1GTO; PGR Flea 2
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AXAF
sage
Reged: 09/15/04
Posts: 234
Loc: New England
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Thanks to everyone for their input. The photos are especially appreciated, Doug. This UVa Wahoo says thanks!
I pinged Bob Luffel at Alpine Astro with a Baader question, as I am trying to figure out if my StellarVue SV90T has sufficient back focus for the wedge's optical path length. One thing that he mentioned is that Baader has redesigned the wedge such that the output is sealed off with a ceramic backplate to prevent one from poking their finger into the output/exhaust beam.
Gary
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Torus Optics 32cm f/6 Dob
Osypowski Equatorial Platform
Fujinon 10x70
Coronado PST plus SolarMax 40 filter
Vixen GPD2 on a Berlebach Tripod
StellarVue SV90T
Edited by AXAF (09/05/09 06:21 AM)
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ragebot
Carpal Tunnel
Reged: 08/26/05
Posts: 1672
Loc: Tallahassee, FL, USA
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Quote:
Thanks to everyone for their input. The photos are especially appreciated, Doug. This UVa Wahoo says thanks!
I pinged Bob Luffel at Alpine Astro with a Baader question, as I am trying to figure out if my StellarVue SV90T has sufficient back focus for the wedge's optical path length. One thing that he mentioned is that Baader has redesigned the wedge such that the output is sealed off with a ceramic backplate to prevent one from poking their finger into the output/exhaust beam.
Gary
I am not sure if this is a good thing or not.
I like to be able to light matches in the output beam of my APM.  
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Meade ETX 90, Meade AR5, Orion ED80, Atlas GT, 8 in Newt, Coronado DS SM40, Garrett 10.5X70, Sigma SD10, SD14, Canon 1D2, Xti, Nikon CP4500, C-14
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