ICEINSPACE
Moon Phase
CURRENT MOON
Waning Gibbous 69%
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05-04-2014, 12:40 AM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,160
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a new toy in the market - a Ha eyepiece
how cool is this
i for one would love to have a play to see how effective this would be
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05-04-2014, 04:22 AM
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Registered User
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Join Date: Dec 2010
Posts: 573
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You lucky guys who go to NEAF every year, please do check into this and report back, thank you! If not, maybe someone over on SolarChat will do it for us.
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05-04-2014, 04:11 PM
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Life is looking up!
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Join Date: Sep 2010
Posts: 2,017
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Quote:
Originally Posted by h0ughy
how cool is this
i for one would love to have a play to see how effective this would be
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That is cool. Don't see much new astro gear that piques my interest these days.
Thanks for the post Houghy, although I would have eventual seen this in the Astro Tech Today magazine, it is great to know of this development now, given that I am considering the purchase of a Ha scope.
Looking forward to seeing some reviews now, as I have been looking at getting a Lunt 80mm Ha PT scope, which I am going to look at in the US this May, at Woodhills Telescopes in LA, on my way to Denver, where I will also be visiting JMI Telescopes in Lakewood (Denver). I have had trouble justifying the expense of the Lunt 80mm Ha PT (around $5k landed), but this development is interesting, as I can use my existing WO FLT110, and, this is certainly a lot cheaper.
NEAF is just at the wrong time of year for me. They should hold it closer to July/August, then I could go to NEAF and Stellafane. I certianly wouldn't go to the US just for NEAF, but Stellafane is another story, as I had so much fun there last year. So, if it was closer to Stellafane, I would definitely make the effort to include NEAF.
Cheers Pete
Last edited by Stardrifter_WA; 05-04-2014 at 04:23 PM.
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05-04-2014, 04:31 PM
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Deprived of starlight
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Join Date: Nov 2006
Location: Sydney
Posts: 3,778
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Says you can only see the full disk in scopes up to around 450mm FL. Presumably above that the combination of magnification and field of view will be too narrow?
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05-04-2014, 04:49 PM
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Life is looking up!
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Join Date: Sep 2010
Posts: 2,017
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Quote:
Originally Posted by MortonH
Says you can only see the full disk in scopes up to around 450mm FL. Presumably above that the combination of magnification and field of view will be too narrow?
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Very good point Morton.
Although, I do have a quad apo astrograph that is only 422mm f/l, which is is mounted with my FLT110. I really got hooked on the Lunt Ha scopes, after seeing a few at Stellafane. Up to that point, I had only seen the PST, which I didn't particularly like.
Cheers Pete
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05-04-2014, 10:27 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
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It still looks like an ERF up front may still be required...
Performance (and FOV) still to be confirmed....
Stay tuned after the 12th, at least one SolarChat member has said he will be buying one to review and try....
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05-04-2014, 10:36 PM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,160
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Quote:
Originally Posted by Merlin66
It still looks like an ERF up front may still be required...
Performance (and FOV) still to be confirmed....
Stay tuned after the 12th, at least one SolarChat member has said he will be buying one to review and try....
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excellent - a brave sol
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06-04-2014, 12:49 AM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,113
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The big difference between Daystar and, well, everyone else, is Daystar need the wavefront to be (nearly) parallel, and this can only be achieved at high F-ratios
Hence before you know it, you are looking at some pretty narrow fields...i.e. way less that a full solar disk.
I've played with almost all H-alpha filters/scopes on the market, IMHO front mounted etalons do the best job in terms of even field illumination. (wavefronts from Sol are about as parallel as they can get at the objective end).
With a front mounted etalon you can use any focal length & f-ratio you want.
The rub is they cost more.
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06-04-2014, 09:04 AM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
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Peter,
Based on seven year's experience in Ha observing, I agree 200%.
However, bang per buck always favours the smaller etalons.....hence the popularity.
(There's another kid trying to get "on the block" - the ARIES Ha "module". This seems to be based on a Lunt external 50mm etalon, mounted between a collimator/ imaging lens system (a la the PST module) but obviously MUCH larger. Still in testing I believe, but shows great promise....)
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06-04-2014, 09:40 AM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,113
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Quote:
Originally Posted by Merlin66
(There's another kid trying to get "on the block" - the ARIES Ha "module"
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Interesting...do you have a link?
In terms of bang for buck, I've always been very impressed with 80mm the pressure tuned Lunt's.
I also had a look through a double stack 100mm 'scope Andy Lunt was showing off at a trade show last year, the excellent image was unfortunately marred by internal reflections.
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06-04-2014, 09:55 AM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
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Re the ARIES....
Only what is being discussed by Valery on the Solar Chat Site.
http://solarchat.natca.net/
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01-05-2014, 02:50 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
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Price increase for #3 batch?
Hmmm
Seems like these are selling well...
They now have a price tag of $995 and sold out until June 2014...
http://www.daystarfilters.com/Quark.shtml
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01-05-2014, 10:18 PM
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Registered User
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Join Date: Nov 2012
Location: Townsville
Posts: 312
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Placing an order for the Chromosphere version in the morning but will have to wait a month or 2 for delivery.
Al
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02-05-2014, 01:14 AM
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Life is looking up!
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Join Date: Sep 2010
Posts: 2,017
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Quote:
Originally Posted by Merlin66
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Damn! I was hopin' to have a look at one later this month when I land in LA. Should have known they wouldn't be available.
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06-05-2014, 02:47 PM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,160
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Quote:
Originally Posted by Poita
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i thought that was for a certain diameter scope over 80mm?
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06-05-2014, 03:49 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
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80 -100mm recommended to use at least a UV-IR blocker (something like the BelOptic UV-IR/KG3) a "proper" ERF above 100mm aperture.
(The Baader 35nm Ha CCD filter would work very well ;-) )
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06-05-2014, 06:18 PM
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Registered User
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Join Date: Jun 2012
Location: Brisbane
Posts: 1,605
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So my Baader UV-IR cut 2" filter (a.k.a. a luminance filter) would work at 80mm? That seems to be what they suggest.
The Ha "eyepiece" looks interesting - I'd be keen to see it side-by-side with, say, a Lunt LS60.
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06-05-2014, 09:31 PM
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Registered User
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Join Date: Dec 2007
Location: North Carolina, USA
Posts: 11
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I had a look through the Quark chromosphere model at NEAF in April. The view was impressive for the cost. Lots of surface detail and a couple prominences. I did not have a chance to look through the prominence model.
I had an extensive chat with the Director of Sales whom I have known for many years, and I decided to order the chromosphere model. I expect delivery in early June. I plan to put it on an 80mm f/9.4 refractor for starters. Daystar tells me that I will not NOT need a front ERF, nor a IR/UV cut filter for my intended use. If I look at the sun for long periods of time, the cut filter is indicated. If I use the Quark on a 100mm f/5, I'll need the ERF. I will likely use the Quark on both refractors, so the ERF will be a later addition.
This package suites my need and saves lots of $ when compared to a dedicated solar refractor (which I've been considering for several years). I'm really looking forward to having an H alpha rig at last.
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07-05-2014, 11:03 AM
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Registered User
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Join Date: Jun 2012
Location: Brisbane
Posts: 1,605
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^^ Thanks for that clarification.
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