Starlight Instruments Barlow Laser Collimator Attachment
- Attaches to laser aperture for making the primary mirror adjustment quick, efficient and compact.
- The Howie Glatter Barlow Laser Collimator Attachment diverges the beam just behind your barlow lens for accurate alignment.
- Allows the user to make solo adjustments.
- The Howie Glatter Barlow Laser Collimator Attachment fits the threaded aperture of any of Glatter holographic collimator.
- Disc attachment with a small mounted barlow lens and flat white front surface screen.
Howie Glatter Laser Collimator Barlow Attachment
When it comes to lasers and collimation, one of the most trusted
names in the business is guru Howie Glatter. His uncompromising quality
and dedication to above average products, not only put his name above
the rest - but in demand as the finest available on today's market.
Usually a manufacturer doesn't take the time to explain to a customer
exactly why their product excels over others - or why it performs better
- but not Howie. Here's what he has to say about his new Howie Glatter
Laser Collimator Barlow Attachment:
"Normally, a telescope takes parallel light rays from a distant star and
converges them to a point at the eyepiece focus. Barlowed laser
collimation takes advantage of the fact that a telescope will work in
reverse. Placing a colllimator into a barlow lens will cause the
parallel rays of laser light to diverge, apparently from a point just
behind the Barlow lens. The diverging rays projected from the
laser-Barlow combination in the focuser are turned into a beam of
all-parallel rays when they are reflected from the primary, except for
where the center mark on the primary prevents the mirror from
reflecting. This reflected beam, containing a superimposed shadow of the
collimation target, is projected up to the secondary, and then
reflected to the focuser.
If you placed your laser collimator into a conventional barlow lens, you
need to attach a paper circle to the end of the barlow as a screen to
view the shadow on. The paper circle needs to have a hole in it's center
to pass the outgoing beam. The primary tilt is now adjusted to center
the target shadow around the hole. The position of the shadow on the
screen is effected very little by motion of the illuminating beam. It is
almost startling to see the shadow remain stationary as you "bend" the
collimator and Barlow around in the focusser, and the fuzzy perimeter of
the diverged laser beam moves all over the place.
My Self-Barlowed collimator has a Barlow attachment that screws to the
laser aperture for making the primary adjustment. The Barlow attachment
is a disc with a small barlow lens mounted in it's center hole, and a
flat white front surface as a screen. It makes the Barlow procedure more
compact and convenient. The Barlow attachment fits the threaded
aperture of any of my holographic collimators, and it can be purchased
separately as an additional accessory by those who already have the
holographic collimator."
Easy... Accurate... and Precise. What more could you ask?
