This is our 9th year producing and selling accessories for Obsession Telescopes and other Big Dobs online and is the home of the original DSC Stalk! The website is often updated with appearance and content changes, so check back often for new additions.

Scroll down this page for an index of Accessory Products and Services.   The accessories you see primarily are enabling accessories; i.e., they either make setup and tear down easier, or they make the observing experience more enjoyable or efficient, or both.  

Services include ServoCAT installation , Ground Board Repair, and Glatter Sling Installation.   We have installed ServoCATs on Obsession classics and Obsession UCs, as well on Starmasters, Discoverys, TScopes, and homebuilts!

We have outfitted many Obsession UC15s, 18s, and 22s.   See our UC page for Markless Astronomics accessories that fit the UC! (click here).

Feel free to e-mail me with questions about products, shipping, how-tos, etc.   I respond to e-mail continuously, often within minutes of when it is received.   I can also accept your telephone call.   E-mail me privately for the number to call.   Want a custom accessory built?   Contact me and let's discuss it.

Ordering Process:   Email me with selected items identified.   I will respond with a total cost and payment options.   S&H costs depend on location.   Multiple item orders result in lowest S&H.   Additional information (e.g., telescope size, equipment installed, etc.) often is needed.   Write for assistance at any time.

Contact information: (due to a deluge of spam emails, my email address is disguised slightly.   I apologize for the inconvenience.)

Email:  cs(at)marklessastronomics dot com   (copy and paste in your email software and replace the (at) and dot with the appropriate symbols.)

Shipping Information:   Please click on the following link for information about shipping methods, cost, and business terms - a must read for international customers.

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1. Tablet Stalk II™ by Markless™ Astronomics   NEW!   Supports tablet computers.

2. DSC Stalk™ II by Markless™ Astronomics (over 550 in use!)    

   *    Just like the Original version, but featuring the Moonlite Clamp

   *    Models for ServoCAT Gen1/Gen2 and Gen3, Classic Obsessions, Obsession UCs (15, 18, 22), LightBridge, and Other Big Dobs

   Netbook Stalk II™ by Markless™ Astronomics  

   Astro PC-Podium™ by Markless™ Astronomics

   RCPM™ by Markless™ Astronomics    

   *    Remote Controlled Power Module

   *    Fits almost any big Dob with a rocker box and 2 inches clearance to mirror box.

   *    Models for Classic Obsessions, Obsession UC 22, and Other Big Dobs

   Cable-Stop™, by Markless™ Astronomics - NEW!!!   Stop your drive cable from unspooling.

   DSC Stalk Sandwich Kit, (DSC-SK) by Markless™ Astronomics

   Markless Covers, by Markless™ Astronomics   -   Protect your investment.

   Markless™ ServoCAT™ Holding Bracket

   Markless™ Battery Bracket

   Markless™ Counterweight for Obsession Telescopes® (over 75 installed)

   Spider Wiring Kit™ for Obsession Telescopes™ and other Big Dobs  

   Big Dob DewBuster Bracket (BDDB Bracket)™ for Obsession Telescopes™ and other Big Dobs  

   Power Distribution Bar™  

   Fan Connection™ Kits  

   NEW!  Battery Box Kit  

   UTA Power System  

   UTA Power Cable  

   PIM™ by Markless™ Astronomics    

   *    Power Interrupt Module

   *    Fits any almost any big Dob with a rocker box and 2 inches clearance to mirror box.

   *    Models for Classic Obsessions, Obsession UCs, and Other Big Dobs

   Basic Power™ Kit for non-PGB Equipped Scopes  

   Heavy Duty Battery Cable Kit for PGB Equipped Scopes  

     Teflon Pad; Cables, Connectors, Plastic Hole Liners, etc. for DSC Stalk™ connections 

Glatter Sling Installation - NEW!! ... by Markless™ Astronomics

Field Installation of ServoCAT™ and ServoCAT,Jr.™ ... by Markless™ Astronomics

for Obsession® - Starmaster™ - Discovery™ - Others

Special modifications possible.

Email me for a reservation: cs(at)marklessastronomics dot com

Ground Board Repair

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Great Astro Links to other fine products:

Obsession® Telescopes - by Dave Kriege - Heirloom Grade Telescopes for the discriminating astronomer

-------------------------------------------------------------------------------------------------------- Astrocrumb Filter Slides - a "MUST HAVE" accessory for your Big Dob. Roger builds 'em RIGHT!