I had my new Orion StarBlast 4.5 out today/tonight and looked at the Sun (with Baader film), Venus, Mars, and Saturn. At the center of the field of view, they...
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William Hamblen
wrhamblen
May 13, 2012 10:24 am
What eyepiece? Bud ... [Non-text portions of this message have been removed]...
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Robert Thomasson
bobthomasson
May 13, 2012 2:37 pm
To add more fuel to the fire, here is what the instructions that came from Astro-Physics with my Baader solar film material say. Note that I have zero...
119729
Desi and Betsi's ...
altjeep
May 13, 2012 2:37 pm
At F/4, your telescope is *very* fast. This means that if you don't use a coma corrector or a very high-quality eyepiece which does much of the correction,...
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John Reilly
jmr.6@att.net
May 13, 2012 2:37 pm
That does seem to be the norm I'm afraid. Lots of folks are using "coma-correctors" for just that reason( I'm not sure if they have them for 1.1/4 focusers?)...
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Bob
greggmhill
May 13, 2012 5:12 pm
It happens with both of the factory eyepieces, 17mm, and 6mm. Gregg...
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Bob
greggmhill
May 13, 2012 5:20 pm
I understand that degradation near the edges may be expected, but I was surprised at how little off center it needs to be to see it. I collimated it both with...
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Bob
greggmhill
May 13, 2012 5:24 pm
Bummer. At elast it is nice and sharp in the center. After all, I bought this one as a quick grab and go scope, and for that, it is great. I can't beat a 13#...
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Dale M
lionsfan0_16
May 13, 2012 7:23 pm
that is garbage..... I have an 11" baader solar filter Full aperature and it works great!!! and just like gregg says if i wanted to make it off axis I can cut...
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chicagoastronomerjoe
chicagoastro...
May 13, 2012 7:30 pm
Why one would cheat one's self out of all one can grab from a full aperture for the limited off-axis is silly. As mentioned, you can always block what is...
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William Hamblen
wrhamblen
May 13, 2012 8:03 pm
If these are Orion's Expanse eyepieces with 66 degree apparent fields of view, I believe you are seeing positive distortion, which appears to stretch radially...
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Bob
greggmhill
May 13, 2012 8:53 pm
They are "Explorer II" eyepieces. I am going to look with my old Celestron eyepieces that I got with my scope in 1977 to compare them. Gregg...
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rmollise@...
rmollise
May 13, 2012 10:26 pm
The reason for this? Mostly it is because this is an f/4 telescope. Coma is quite pronounced, making anything approaching the edge look distorted. Solution? A...
119739
Bob
greggmhill
May 14, 2012 4:54 am
I just got back from a small dinner gathering at a friend's house. Most of the people there had never looked through a telescope, and they were thrilled with...
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Daniel Chang
c91332003
May 14, 2012 9:53 pm
Hi,aLL 20120514 Saturn Tonight transparency poor but good seeing, but also proved that seeing important. ...
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Robert
bugwubber
May 15, 2012 4:11 am
This is a good discussion for us inexperienced guys to read. My initial opinion was, $7 bucks to experiment with a 2.5" piece of Baader. Works on my 8" Meade...
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regen555
May 15, 2012 2:00 pm
Have a look at this: http://www.cruxis.com/scope/img1070/1070_SolarObs_full.jpg Regs, Reg...
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Erik Ruud
erik_d_ruud...
May 15, 2012 2:44 pm
That is a whole lot of aperture! I made a full aperture filter for my 5" newt. As an experiment, I used the disc that I cut out for the full aperture and cut...
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WILLIAM
willymac1...
May 15, 2012 4:35 pm
Its actually extremely dangerous. Mylar and Baader films may be quite tough but a hornet or some such other beastie flying into that at full tilt could well...
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Ugly Dog
shenzistiber
May 15, 2012 7:29 pm
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Dale M
lionsfan0_16
May 15, 2012 8:06 pm
Maybe the film you have can rupture from a BEE flying into it but the Baader film I have WILL NOT just rupture from a bee flying into it, I had my filter on my...
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Robert
bugwubber
May 15, 2012 9:50 pm
There is a youtube video on transitofvenus.org that goes over eye saftey. ToV 2012: Ralph Chou - Observing the Transit Safely and Effectively At 18:38 he...
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Robert
bugwubber
May 15, 2012 11:33 pm
Well I was going to ask, how much aperture is too much for a single layer of Baader film. I see they make a 47" square piece. Guess they wouldn't make that...
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Bob
greggmhill
May 16, 2012 12:07 am
Holy Zimbabwe, Batman! That filter probably costs as much as a car. Gregg...
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Bob
greggmhill
May 16, 2012 12:09 am
With one piece that large, I'd bet a small bird would bounce right off of it, especially if it were made correctly, i.e., not stretched out tightly in the...
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Bob
greggmhill
May 16, 2012 12:16 am
I ordered a "medium roll" of Baader film and made a cell for the Orion 4.5 I then decided to try it on my old Bushnell 565, which I thought was a junk...
119752
Mike
photogazer
May 16, 2012 12:47 am
Hello, I am Michael Overacker and I run the website lx200classic.com. I just finished doing a review of the kit by George Dudash that upgrades the LX200...
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Robert
bugwubber
May 16, 2012 1:12 am
The 47" square of Baader film is $300 online. Looks like the rim is made from a sheet of ply... I wonder if that took less than $500. Is his $500 view that...
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Erik Ruud
erik_d_ruud...
May 16, 2012 4:51 am
I just took a piece of my Seymour solar film and tried to tear it and I couldn't do it. I then tried to punch a hole through it with the tip of my scissors and...
119755
Worsel
bryancashion
May 16, 2012 4:51 am
If you paste the URL and then back up to the top level, you'll find that he's built several BIG scopes and cost appears to be not an issue. Bryan...
