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EmielVeldhuis
Carpal Tunnel
Reged: 01/29/07
Posts: 2479
Loc: Zwolle, the Netherlands
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I love to see some german sun through a LuntScope at the ATT over about a week!!! Hopefully some sun that day!
greetz emiel
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8" LX10 SCT,Skywatcher NEQ6pro,Vixen SP,Skywatcher 150/1200mm refractor, Coronado PST's: Gold and Blue,Lunt LS60T-HA and CaK b/600, b/wToUcamSC3RAWmod.and a DMK 31AU03as.
http://astrosurf.com/obsolar/colabora/colaboradores/veldhuis.html
www.solarlive.nu
Experience our nearest GV2 star, live at SolarLive!
www.solarlive.nu
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bsim
Pooh-Bah
Reged: 01/04/08
Posts: 1049
Loc: New York City
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Markus, thanks for the news.
I think we would all agree that it would be better to do it right the first time.
I'm looking forward to the upcoming reports and pictures!
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Oldfield
Postmaster
Reged: 03/20/02
Posts: 5809
Loc: Hong Kong
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LS60TDS, is it double pass or double stacked with external etalon?
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The Home Astronomer from a city where most people are proud of the light pollution
Toys: Orion 100ED, Ranger with NGF-CM, SM40/BF10, TG-SP II, LXD55, DMK 31AF03, Canon 10x30 IS...
My observation log and ideas My General Blog
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leongdw
sage
Reged: 02/05/07
Posts: 219
Loc: Hong Kong
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http://luntsolarsystems.com/news5_20_2008.html
Although the initial indications were that the 60DP would provide excellent images for the price, I cannot manufacture the 60 in this manner if I feel there is a better solution for the money. (simply put).
Although the etalon system was functioning at <0.55 Angstroms, the residual errors in other filters washed out a lot of the detail.
The LS60T/DP (now DS) will be double stacked from the factory.
The LS60T/DP will utilize unobstructed etalons.
It will have the added functionality that it can used both single and double stacked.
In single stack mode the bandpass will be ~0.7 (guaranteed <0.8A) for prominence viewing.
In double stack mode the bandpass will be ~0.5 (guaranteed <0.55A) for surface detail.
Pricing will remain the same thru July 31st.
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David
Celestron 8 inch SCT, TMB 80/480 APO, Sky Watcher 120mm Equinox, Mewlon 250, Obsession 18"UC
Lunt Solar LS60T/CaK, LS75F, LS100T, LS100F
DMK31AF03, DMK21AF04, DBK21AF04
Denk II Binoviewer, 13mm Ethos, TMB mono (5mm, 9mm), 19mm Panoptic, 9mm Nagler
EM200 & TGSP II
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colinsk
Carpal Tunnel
Reged: 01/17/08
Posts: 2150
Loc: CA
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Well, I have to admit i love the idea of double pass.  But, how can you balk at the price for a 60mm unobstructed double stack? What was not clear in that discussion was whether the other etalon was internal. I assume it is external or I think it would be difficult to remove for single pass mode. Hmmm...
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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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snowdragonusa
Pooh-Bah
Reged: 09/04/07
Posts: 1128
Loc: Denver, CO
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Quote:
Well, I have to admit i love the idea of double pass. But, how can you balk at the price for a 60mm unobstructed double stack? What was not clear in that discussion was whether the other etalon was internal. I assume it is external or I think it would be difficult to remove for single pass mode. Hmmm...
At the end of his memo he did mention that the second etalon would be removable for the <0.7 A viewing. So I am guessing it will be external.
While the double pass was a novel idea. I am glad to see the ability and versitility of the double stack.
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Adam
12" LX200R, AT80LE
Lunt 60mm Ha & CaK solar scopes
DMK41.AS, DSI Pro, DSI-C, LPI
Denver Astronomical Society
Brighton Astronomical Group
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jrcrilly
Refractor wienie no more
Reged: 04/30/03
Posts: 25181
Loc: NE Ohio
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Quote:
While the double pass was a novel idea. I am glad to see the ability and versitility of the double stack.
Agreed. It does raise one question: what size will the external filter be? There doesn't appear to be a 60mm external filter available.
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John C
Urban Observatory
A&M/Astreya 76mm F/6 APO
TMB/LOMO 80mm F/7.5 APO
Tak FSQ-106N F/5 APO
Meade 178ED F/9 "APO"
Meade ETX-125AT
C14
Teeter 20" F/3.8 truss Newt w/ServoCat
CI-700, NJP, GPDX/SS2KPC, CG5-GT
ST-10XME, DSI Pro
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Oldfield
Postmaster
Reged: 03/20/02
Posts: 5809
Loc: Hong Kong
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I heard that both are internal.
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The Home Astronomer from a city where most people are proud of the light pollution
Toys: Orion 100ED, Ranger with NGF-CM, SM40/BF10, TG-SP II, LXD55, DMK 31AF03, Canon 10x30 IS...
My observation log and ideas My General Blog
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Jim7728
Postmaster
Reged: 04/10/05
Posts: 5063
Loc: Stoop Landing Observatory, NYC
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Quote:
Quote:
While the double pass was a novel idea. I am glad to see the ability and versitility of the double stack.
Agreed. It does raise one question: what size will the external filter be? There doesn't appear to be a 60mm external filter available.
AFAIK, the LS 50mm Ha external filter can be doublestacked on the 60mm by simply threading it onto the dewshield part.
Furthermore, I was told by Marcus Ludes that factory matching will not be necessary for those who want to double stack thier 60mm single pass Ha scope, with that filter, at a later time.
Correction Update: Apparently there will be a 60mm externally doublestacked at the factory.
http://luntsolarsystems.com/news5_20_2008.html
Edited by Jim7728 (05/21/08 08:00 AM)
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Trever
Carpal Tunnel
Reged: 08/18/03
Posts: 2978
Loc: North Alabama
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That will be nice if and when I would like to have the DP 60mm scope. I could always order the 50 or 60mm filter, whichever is available, in the future and attach it to the SP 60mm scope.
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Trever
Explore Scientific 152mm F/6.5 Achromat
Celestron CGEM 11 XLT SCT
Lunt LS60THaDS50 B1200 w/pressure tuner
Nikon 8x42 Trailblazer Binos
Stellarvue M1 mount
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cocobolo
Carpal Tunnel
Reged: 10/27/07
Posts: 1550
Loc: british columbia, canada
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back to a question earlier in the thread regarding the 6 vs 12mm blocking filter. I put the question directly to Markus, I think it may be in the vendor forum. For visual and webcam use, the 6mm is OK. If you want to use a DSLR for imaging, he suggested the 12mm b.f. Hope that helps.
Keith
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bsim
Pooh-Bah
Reged: 01/04/08
Posts: 1049
Loc: New York City
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I changed my order to the 12mm blocking filter for three reasons: I'm going to use bino viewers in the future. Second, I'm primarily going to use an alt/az mount and constantly centering the solar disc with the 6mm will be an issue. And third, it will be hard to see large prominences since there isn't much room in the 6mm.
I'll probably get tracking. Any recommendations? I've seen some people use the Orion TeleTrack and others use a NexStar SLT mount.
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colinsk
Carpal Tunnel
Reged: 01/17/08
Posts: 2150
Loc: CA
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I have the Coronado DS mount and the Meade LXD75 mount. The alt-az is more convenient for EP positions at the ecliptic but the DS mount is too shaky for me. If I was looking for a new mount it would be a tracking alt-az that was designed for a 20 or 30# scope.
But, I hope I take the time to make a heliostat. Keeping the EP stationary and the observer facing north is the way to go.
--------------------
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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