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Re: Mach1 vs Myt
malanalan
"I think this is everything. The good news is that both mounts are REALLY good - there isn't a wrong choice."
You just scratched the surface. I own a Paramount for a few years now and your evaluation of MyT and the SB software is very shallow and inaccurate. Over years on many different forums, I read many threads which were comparing premium mounts. Quite often someone would recite a well known cliché, you can’t wrong with either one. I found this very misleading. Unfortunately, the truth is there is wrong choice.
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Re: ATS Portable Pier for 1100 GTO and GTO-CP4
John A. Sillasen
Thanks Roland. As I saw the AP team heading to dinner tonight, I told George I would be picking his brain tomorrow for a shopping list for this. I See you have given me a parts list already so this should be even easier on George now as I did not see your reply until now.
John
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Re: solar filters
observe_m13
Utter and total nonsense.
toggle quoted messageShow quoted text
---In ap-gto@..., <DavFab@...> wrote : I read somewhere that an oil spaced lens should NOT be exposed directly to
sunlight. Does anyone have information about this?
In a message dated 4/6/2016 12:26:40 P.M. US Mountain Standard Time,
ap-gto@... writes:
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Re: solar filters
David Fabrizio
I read somewhere that an oil spaced lens should NOT be exposed directly to
sunlight. Does anyone have information about this?
In a message dated 4/6/2016 12:26:40 P.M. US Mountain Standard Time,
ap-gto@... writes:
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Re: solar filters
Just for the record, Al Nagler has stated that there is no problem using their NP scopes for solar viewing with a wedge. The rear elements are far enough forward in the light path that there is no heating problem. I can't comment on others such as those from Takahashi. Don Anderson
From: "'Woody Schlom' woody@... [ap-gto]" To: ap-gto@... Sent: Wednesday, April 6, 2016 3:13 PM Subject: RE: [ap-gto] Re: solar filters Pawel,
I'm
curious about your comment to keep the Sun centered to prevent heating up the
telescope elements. Unless you've got a 4-element Petzvel design scope
where the rear elements are near focus, I don't see two or three elements at the
front of the scope where the image is totally unfocused, heating up -- whether
centered or not.
I'll
admit that my little 80mm triplet doesn't transmit nearly as much light and heat
as your big aperture scopes, but I've never heated mine up to the point where
the wedge was uncomfortable to touch -- even while imaging continuously for
7 hours with an ambient temperature of 98° F.
And I
sure don't understand why keeping the sun centered would decrease heat buildup
in the telescope lenses.
Woody
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Re: solar filters
Woody Schlom <woody@...>
Pawel,
I just
thought of how your big scopes can heat up telescope elements -- field
flattener. I believe the image comes to focus in the flattener -- so that
would definitely heat the lenses up.
I'm
not using a flattener at the moment so that's not a problem for me. And
even if it was, I suspect my much smaller 80mm scope still wouldn't heat things
up as much.
Woody
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Re: solar filters
Woody Schlom <woody@...>
Pawel,
I'm
curious about your comment to keep the Sun centered to prevent heating up the
telescope elements. Unless you've got a 4-element Petzvel design scope
where the rear elements are near focus, I don't see two or three elements at the
front of the scope where the image is totally unfocused, heating up -- whether
centered or not.
I'll
admit that my little 80mm triplet doesn't transmit nearly as much light and heat
as your big aperture scopes, but I've never heated mine up to the point where
the wedge was uncomfortable to touch -- even while imaging continuously for
7 hours with an ambient temperature of 98° F.
And I
sure don't understand why keeping the sun centered would decrease heat buildup
in the telescope lenses.
Woody
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Re: solar filters
Woody Schlom <woody@...>
Yes,
it unscrews. Baader makes a special thin adapter ring that replaces
it. Then you screw standard T2 accessories into that
ring.
Woody
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Re: solar filters
Pawel Lancucki
Mike
Definitively the wedge. I have been using it on my AP152 and the views were terrific and I had no issue getting info focus with Canon. Views are better than baader Astrosolar. But if you just want to try, get the filer foil and make yourself a safe filter cell. Costs close to nothing compared to the scope. One point with wedge - keep the sun centered, otherwise it will heat the telescope elements. You may need to cover the scope from time to time to let the heat trap cool. Just follow the instructions. It is very safe. CS Pawel Lancucki
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Re: solar filters
Wayne Hixson
toggle quoted messageShow quoted text
On Wednesday, April 6, 2016, 1:25 PM, 'Woody Schlom' woody@... [ap-gto] wrote:
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Re: solar filters
Woody Schlom <woody@...>
Again,
by replacing the Baader 2" Click-Lock with their T2 threaded adapters, you can
gain almost 3/4" (~19mm) of back focus.
I've
got my Baader on an 80mm triplet refractor and can reach focus prime, and with
2x and 3x Barlows with my C-mount camera. For eyepieces, you can also use
the Astrosystems ultra low-profile 2" to 1.25" adapter which doesn't have an
external thumbscrew, but an internal setscrew. This lets you
slip eyepieces and Barlows deeper into the 2" Baader Click-Lock holder by
as much as an inch.
Woody
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Re: solar filters
Wayne Hixson
Trying to come to focus with the Baader wedge and my ZWO/NW127is now. Think I'm about 2-3 mm away for prime focus. Can get there (barely) with my 2.5 and 5x PowerMates. Sent from Outlook Mobile
On Wed, Apr 6, 2016 at 12:26 PM -0700, "erik.pylyser@... [ap-gto]" <ap-gto@...> wrote:
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Re: solar filters
erik.pylyser@...
Hi Woody... you're right on all fronts... ;-)... I was just being cautious towards potential buyers, to check their systems... I've used the Baader wedge on my AP155... but also on shorter focal lengths of other brands, and then - as you said - you need to work your way around the back-focus problems... ;-) Erik.
From: "'Woody Schlom' woody@... [ap-gto]" To: ap-gto@... Sent: Wednesday, April 6, 2016 7:22:56 PM Subject: RE: [ap-gto] solar filters
Erik,
I
don't think back-focus distance will be a problem on a 160mm scope! It's
when you go with a short focal-length scope you run into back-focus
problems. And at least with the Baader, there's a "secret" way to gain
around 3/4" in back-focus distance -- you replace the Baader 2" Click-Lock with
Baader T2 threaded fittings.
Woody
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Re: solar filters
Mike Shade
For the money a wedge is going to cost versus the amount of use does not
seem a viable alternative. From: ap-gto@... [mailto:ap-gto@...] Sent: Wednesday, April 06, 2016 10:32 AM To: ap-gto@... Subject: RE: [ap-gto] solar filters Mike, What's this about a wedge not allowing photography? Who/what gave you that idea? Of course you can image with a wedge. In fact, Baader makes two versions of their Herschel Wedge, the "V" version for visual, and the "P" version for photography. The difference is the "P" version comes with more ND filters. Cameras can take more brightness than our eyes, so in the "P" version, Baader includes a couple of less-dense ND filters exclusively for photography. I'll even go as far as saying Herschel Wedges are BETTER for imaging. So far as I know, Herschel Wedges are the best for white-light solar viewing and imaging. But yes, they're also the most expensive. Also note that the Baader Herschel Wedges come with the greenish Baader Continuum filter. You'll have to spend an additional $100 or so to add a Continuum filter to a Lunt wedge -- which seriously narrows the price difference between the two brands. Woody. -----Original Message----- From: ap-gto@... [mailto:ap-gto@...] Sent: Wednesday, April 06, 2016 6:47 AM To: ap-gto@... Subject: RE: [ap-gto] solar filters Thanks...but a wedge would not allow any photography/imaging and is more than I want to spend on something that will not get used much. Thank you Mike J. Shade: mshade@q.com Mike J. Shade Photography: mshadephotography.com In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west. Can it be half a year since I watched her April rising in the east? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights International Dark Sky Association: <http://www.darksky.org/> www.darksky.org From: ap-gto@... [mailto:ap-gto@...] Sent: Wednesday, April 06, 2016 4:36 AM To: ap-gto@... Subject: Re: [ap-gto] solar filters A Herschel Wedge! Baader or Lunt. I've used them on my AP scopes with great success. The solar load on a quality refractor is no problem so long as the scope has front lens elements only. You'll get unbelievable views with your 160 and a wedge. Make sure to get a 2" model and to use additional ND filters for visual. The Baader comes as a kit with everything you need. Of course you can only use a wedge with a refractor! -Craig On Apr 5, 2016, at 11:41 PM, 'Mike Shade' mshade@q.com [ap-gto] <ap-gto@...> wrote: Curious as to what solar filters folks have found to be good...I was thinking of a Thousand Oaks glass filter for the 160 EDF...anyone have one for use with this scope...what size fits properly...? Mike J. Shade: mshade@q.com Mike J. Shade Photography: mshadephotography.com In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west. Can it be half a year since I watched her April rising in the east? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights International Dark Sky Association: www.darksky.org <http://www.darksky.org/>
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Re: solar filters
Rodolphe Pineau <pineau@...>
I use to have a glass filter (not on a AP telescope but I don't think this is relevant to the current comparison).
Then I moved to a Lunt solar wedge. Here are 2 example taken with the same telescope (102 triplet APO): glass filter imaging : http://www.rti-zone.org/astro/moon_sun/900gto/sun/spots_1582_1579_1575.jpg Lunt wedge : http://www.rti-zone.org/astro/moon_sun/900gto/sun/Sun_partial_eclipse_2014_10_23_1.png I think the image speak for themselves. Regards, Rodolphe -- | Rodolphe Pineau RTI-Zone | | http://www.rti-zone.org/ | | Robotics / Unix / Mac OS X / Astronomy |
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Re: Meade lx 200(off topic help)
Suresh Mohan
Thank you I just posted there . Regards Suresh
On Apr 6, 2016, at 11:43 PM, 'Christopher Erickson' christopher.k.erickson@... [ap-gto] <ap-gto@...> wrote:
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Re: solar filters
Personally I have a Coronado 40mm filter set, a Daystar Quark, a mess
of Orion glass filters and a roll of Baader visual film.
The Coronado gives the best solar views, followed by the Quark,
followed by the glass filters and the film in last place.
I have tried
a wedge but do not own one. It seemed about on-par with the glass filters
to me. Christopher
Erickson
From: ap-gto@... [mailto:ap-gto@...] Sent: Wednesday, April 06, 2016 3:14 AM To: ap-gto@... Subject: Re: [ap-gto] solar filters Hi,
I'd suggest as a (cheaper) still-quite-good alternative:
Two versions: one for visual, one for photography...
The wedges are a bit better, but... be aware of the potential problem of
backfocus with the wedges... check your system's focus distances before
buying... ;-)
Don't go for glass filters...
Erik.
From:
"Craig craig@... [ap-gto]"
To: ap-gto@... Sent: Wednesday, April 6, 2016 1:35:34 PM Subject: Re: [ap-gto] solar filters A Herschel Wedge! Baader or Lunt. I've used them on my AP scopes with great
success. The solar load on a quality refractor is no problem so long as
the scope has front lens elements only. You'll get unbelievable views with
your 160 and a wedge. Make sure to get a 2" model and to use additional ND
filters for visual. The Baader comes as a kit with everything you
need.
Of course you can only use a wedge with a
refractor!
-Craig
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Re: Meade lx 200(off topic help)
IIRC, PEC was programmed at the factory in the Classic LX200 and
couldn't be easily changed.
You should join the LX200-Classic Yahoo group and ask your questions
there.
Christopher
Erickson
From: ap-gto@... [mailto:ap-gto@...] Sent: Wednesday, April 06, 2016 5:35 AM To: ap-gto@... Subject: [ap-gto] Meade lx 200(off topic help) I will be goinf this weekend to a hill station , my daughter is
tagging along .I would be uisng my Mach1 and she would use the LX 200 classic on
a wedge .I havent used the mount in ten years, i started the mount and it works
fine . I need help in the following aspects. How do i do a PEC in lx 200.?
I remember a procedure if u wanted a nearby galaxy to be bang in centre u
had to press a series of buttons for eg i go to alkaid ,centre it and then move
on to m 51
Does anyone remember( those who have used the lx 200)
Sorry if the question is invalid in the group
Suresh
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Re: solar filters
Woody Schlom <woody@...>
Mike,
What's
this about a wedge not allowing photography? Who/what gave you that
idea?
Of
course you can image with a wedge. In fact, Baader makes two versions of
their Herschel Wedge, the "V" version for visual, and the "P" version for
photography. The difference is the "P" version comes with more ND
filters. Cameras can take more brightness than our eyes, so in
the "P" version, Baader includes a couple of less-dense ND filters exclusively
for photography.
I'll
even go as far as saying Herschel Wedges are BETTER for imaging. So far as
I know, Herschel Wedges are the best for white-light solar viewing and
imaging. But yes, they're also the most expensive.
Also
note that the Baader Herschel Wedges come with the greenish Baader Continuum
filter. You'll have to spend an additional $100 or so to add a Continuum
filter to a Lunt wedge -- which seriously narrows the price difference between
the two brands.
Woody.
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Re: solar filters
Woody Schlom <woody@...>
Erik,
I
don't think back-focus distance will be a problem on a 160mm scope! It's
when you go with a short focal-length scope you run into back-focus
problems. And at least with the Baader, there's a "secret" way to gain
around 3/4" in back-focus distance -- you replace the Baader 2" Click-Lock with
Baader T2 threaded fittings.
Woody
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