C5 through the window.

I remember reading about using thin Mylar or some other thin =
plastic-like sheeting as an optical window. Wish i could recall the =
details.

-Florian
Stargazing.com

Ah, yes. Astro-Physics had an uncoated version of the Astro-Solar Safely
Film. That would be worth a try.

"Florian" wrote in message
...
I remember reading about using thin Mylar or some other thin plastic-like
sheeting as an optical window. Wish i could recall the details.

-Florian
Stargazing.com

In article ,
"Alan French" wrote:

Ah, yes. Astro-Physics had an uncoated version of the Astro-Solar Safely
Film. That would be worth a try.

"Florian" wrote in message
...
I remember reading about using thin Mylar or some other thin plastic-like
sheeting as an optical window. Wish i could recall the details.

-Florian
Stargazing.com




I'm not following this. Just how would you use such a film? BTW, I've
poked a Questar thru plate glass windows on a few occasions, with
differing results. I once had a plate window in my office that was
really pretty good.

My recommendation would be to try different parts of the window by
setting the scope in different places in the room. And of course you
need to keep the window perpendicular to the scope axis.

Starry Skies,
Rich

"Richard DeLuca" wrote in message
news
In article ,
"Alan French" wrote:

Ah, yes. Astro-Physics had an uncoated version of the Astro-Solar
Safely
Film. That would be worth a try.

I'm not following this. Just how would you use such a film? BTW, I've
poked a Questar thru plate glass windows on a few occasions, with
differing results. I once had a plate window in my office that was
really pretty good. [SNIP]

Hi Richard,

You replace a window with some of the film, or put a frame in an open
portion of a sliding glass door that has the film in it. Astro-Physics had
an uncoated version of the material used to make the Baader Astro-Solar
Safety Film. I do not see it in their catalog or on their web site, but a
friend bought some to use as a cover on his remotely operated telescope.

I use my spotting scope some through our sliding glass door. Looking
reasonably straight through it, and not using high powers, it works pretty
well.

Clear skies, Alan

In article ,
"Alan French" wrote:



Hi Richard,

You replace a window with some of the film, or put a frame in an open
portion of a sliding glass door that has the film in it. Astro-Physics had
an uncoated version of the material used to make the Baader Astro-Solar
Safety Film. I do not see it in their catalog or on their web site, but a
friend bought some to use as a cover on his remotely operated telescope.

I use my spotting scope some through our sliding glass door. Looking
reasonably straight through it, and not using high powers, it works pretty
well.


Thanks Alan,

At first I thought you guys might be talking about putting a sheet on
the scope's objective, or on the window glass. As you can see, I've
been awake way too long today. If you're up until 5:30am, why go to
sleep at all..........8-P

I'm not sure that Tracy has the option of doing this (based on my
reading of the original question).

Rich

I wonder if insect screening would "improve" the image, that is,
over that seen through common window glass.

I often observe the birds in my backyard through a plate glass door. It does
work but there is no doubt that it looks a whole lot better without the glass
door in the way.

Looking through the screen door, that is definitely worse than lookng through
the glass.

My suggestions (one real, the rest well..)

1. A C5 with a 25mm eyepiece is about 50X. This is a pretty high magnification
and will magnify the problems caused by looking through the window. Lower
magnifications wil be sharper. If you have a focal reducer for your C5,
consider using it. The standard 6.3 reducer will reduce the focal length to
about 800mm. Combine that with a 32 mm Plossl and you will have a field of
view that is 2 degrees instead of 1 degree and be working at 25X instead of
50X. The image should be sharper and the wider FOV makes finding those birds a
lot easier.

2. Take a small hammer and knock a hole in the window. Cover it up at night
with some Duct Tape.

3. Move to New Mexico, Arizona or California where the bugs ain't so bad.

jon

Jon Isaacs wrote:

I wonder if insect screening would "improve" the image, that is,
over that seen through common window glass.



I often observe the birds in my backyard through a plate glass door. It does
work but there is no doubt that it looks a whole lot better without the glass
door in the way.

Looking through the screen door, that is definitely worse than lookng through
the glass.

My suggestions (one real, the rest well..)

1. A C5 with a 25mm eyepiece is about 50X. This is a pretty high magnification
and will magnify the problems caused by looking through the window. Lower
magnifications wil be sharper. If you have a focal reducer for your C5,
consider using it. The standard 6.3 reducer will reduce the focal length to
about 800mm. Combine that with a 32 mm Plossl and you will have a field of
view that is 2 degrees instead of 1 degree and be working at 25X instead of
50X. The image should be sharper and the wider FOV makes finding those birds a
lot easier.

Hmm, that's a good idea. I may try this.


2. Take a small hammer and knock a hole in the window. Cover it up at night
with some Duct Tape.

That's a better idea. I'm going to try that right now. I'll let you
know how it worked out.


3. Move to New Mexico, Arizona or California where the bugs ain't so bad.

jon

Too FUNNY!

Phil

Tracy wrote:
Can I get your home phone number?

As indicated in my earlier post, I went out and tried option number 2.

As soon as I tapped the plate glass window with the small hammer, the
entire sheet of glass developed cracks and shattered into a million
little tiny pieces. The biggest piece left was the size of a pea.
Apperantly, the plate glass window was made of tempered safety glass.
Anyway, the whole the hammer left is way bigger than the amount of duct
tape that I have left over from my last project. (Fixing the ice maker)

My wife heard the window break and came into the room while I was still
examining the pieces. Since I hadn't had the chance to hide the hammer,
she automatically assumed that I must have broke the window. (I was
going to blame it on a bird like the last time.) Anyway, she started
screaming about the mess, the mosquitoes, and the humidty so I told her
to calm down that I was just trying to improve the focus of the birds.
Then she asked what made me think that I could improve the focus by
shattering the window with a hammer.

That's when I told her it was the idea of some guy named Jon on the
internet.

Now she wants to know what gave you the idea of improving the focus of
the birds with a hammer. (Actually, she was still yelling, but don't
worry, she always does that when somebody's idea breaks a window.)

So could I get that number now?

P.S.

Don't try to calm her down by pointing out that the birds ARE in better
focus. I already tried to show her that. She HATES it when you prove
your right.


Jon Isaacs wrote:

I wonder if insect screening would "improve" the image, that is,
over that seen through common window glass.



I often observe the birds in my backyard through a plate glass door. It does
work but there is no doubt that it looks a whole lot better without the glass
door in the way.

Looking through the screen door, that is definitely worse than lookng through
the glass.

My suggestions (one real, the rest well..)

1. A C5 with a 25mm eyepiece is about 50X. This is a pretty high magnification
and will magnify the problems caused by looking through the window. Lower
magnifications wil be sharper. If you have a focal reducer for your C5,
consider using it. The standard 6.3 reducer will reduce the focal length to
about 800mm. Combine that with a 32 mm Plossl and you will have a field of
view that is 2 degrees instead of 1 degree and be working at 25X instead of
50X. The image should be sharper and the wider FOV makes finding those birds a
lot easier.

2. Take a small hammer and knock a hole in the window. Cover it up at night
with some Duct Tape.

3. Move to New Mexico, Arizona or California where the bugs ain't so bad.

jon