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Of all the possible methods and procedures, Gordon describes my favorite when I really want a high level of precision. (E.g. great seeing conditions, new scope or mirror, long session and/or very

My 2 bits... Lasers _can_ lie, if they're not properly and carefully aligned. With that said, my procedure is as follows: Assemble scope; Check primary is seated in cell properly and no wonkiness in

Howie like Dave made his hobby into a business enterprise. What a symbiotic endeavor in a "perfect" world! The $280 price is certainly not Howie's last price, but profiteering from his name. Dave's

Hi Bob, let us start by saying that you first need to check that the secondary is right at the centre of the optical tube and that the primary is centered too. As the primary might love a little when

I have been using the collimating eyepiece that came with my scope and an Orion laser collimator in a 1.25 to 2 inch adapter forever. It works great. Chris <indanapt@...> wrote:

No. Not even. A laser that when rotated in v-blocks that is close to center (ok, centered) will make your collimation look awesome. AFTER you use a sight tube.I met Howie a few times at RTMC. I never

Is it better, probably because Howie machined to very tight tolerances. Will the $180 do…most certainly.

I agree that using site tube and a cheshire will do a good alignment, but you need some light.? Most cheshire systems incorporate a sight tube and aids in the alignment the secondary mirror.? This

Despite what some say. No matter WHAT, you need to do a sight tube alignment at the very least.? Otherwise all the lasers and barlows on the planet, will simply perfectly collimate your optics wrong

Third recommendation for Glatter.? I believe Starlight instruments makes them now. https://www.starlightinstruments.com/?s=glatter shows all the options.? I use the 635 nm laser with my dob in

I use the 2" on the Obsession site, and have been very happy with it. However in memory of Howie Howie Glatter 650nm Std Brightness Red Laser Collimator f/ Reflector -1.25" & 2" | eBay | | | | $280.00

Second suggestion of the Glatter Collimator- https://camera-concepts.shoplightspeed.com/howie-glatter-howie-glatter-125-inch-collimator-65.html

My favorite is the Howie Glatter collimator. When Howie passed it became unavailable but I think it is being remade (or was?)

We were lucky enough to have a 18" Classic Obsession donated to our club.? It needed a little love to become useful. I used a Cheshire collimator to align the secondary and collimate the scope, to

So, I came up with this idea. For my 2.6" mirror it fits great and fills up to the back. Now obviously once the mirror and dew heater are back in you will slice the back straight down to fit the new

I agree on the insulation behind the dew heater. Mine had pillow batting behind it. If the heater is the wrong size and too small you will also have problems. Chris

I am pretty sure I used silicone glue on mine. You use only a very small amount.

Yep, I agree. Instead of gluing the heater, just cut some pink ( hard) styrofoam insulation to fit the gap between the back of the mirror and the secondary holder. The heater will be pressed against

Sounds like Astrosystems! Sent via NeuralBiolink

Sounds like an Astrosystems system. (no pun intended) Here's a link. There you will find documentation and instructions. https://www.astrosystems.biz/dewgrd.htm -Dragan