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Condition: This is a used 15" Obsession Dobsonian in excellent condition. The previous owner took excellent care of his equipment and it shows. You've heard of the quality that is an Obsession scope, now come see it for yourself.
This scope includes both the Argo Navis digital setting circles as well as the ServoCAT goto drive/tracking system. The scope with these accessories comes to over TEN THOUSAND DOLLARS. This scope is a screaming deal.
NO WARRANTY OR GUARANTEE ON THIS ITEM. BUYER TO INSPECT PRIOR TO PURCHASE.
Medium Aperture, keep your feet on the ground!
Now everyone can own a piece of the dream.
The Obsession 15 has the same quality and award winning design as our other telescopes at a really great price.
Four times the light gathering power of an 8 inch scope so you get much bigger and brighter images.
With an Obsession 15 you can really see the universe.
Easy to set up and use, the eyepiece height is always less than 5 1/2 feet off the ground. Most observers won't even need to use a ladder!
Wheelbarrow handles included at no extra charge.
|4 times the light gathering power of an 8 inch Schmidt-Cassegrain||Obsession
|Limiting stellar magnitude:||15.5||14.0|
|Rayleigh Resolution Limit:||0.36
(minimum diameter before a
nebular object fades from view)
Metric info shown in italics
- 15" - 381 mm OMI 2 inch thick mirror
- Fused silica glass standard on all 15" Classic primary mirrors.
- 96% reflectivity
- Enhanced Aluminum Coating and Dielectric Overcoat (a supreme coating)
- Center marked for precise collimation
- plus Interferometry certification
see Optics page for more info
- 2.6" - 66 mm United Lens 1/10 wave or better
- Interferogram included
- 96% reflectivity at 550 nm
- Super enhanced Brilliant-Diamond non-fading multi-dielectric coating
see Optics page for more info
- 68" (± 2") - 1727 mm (± 50 mm)
Eyepiece Height at Zenith:
- (approximately) 66" - 167 cm
- Length: 45" (± 2") - 114 cm (± 5 cm)
- Diameter: 1.25" - 32 mm
- Wall Thickness: 0.035" - 0.9 mm
- Diameter: 19" - 48 cm
- Height: 10" - 25 cm
- Weight: 8 lbs. - 3.6 kg
- A= 25" - 63 cm | B= 23" - 58 cm | C= 19" - 48 cm | D= 21" - 53 cm
Mirror Box weight:
- The heaviest component (what you don't lift): 60 lbs - 27 kg
- Weight at Handles: (what you lift at Wheelbarrow handles): 9 lbs - 4 kg
Standard Features and Accessories:
Comes standard on all Obsessions 12.5" through 25" at no extra charge.
Primary Mirror Coating
Enhanced Aluminum - 96% reflectivity, with dielectric overcoat (a supreme coating) standard on all primary mirrors. See Optics page for more info.
Secondary Mirror Coating
An Obsession exclusive - Super enhanced Brilliant-Diamond is standard on all Obsession secondary mirrors. This premium multi-dielectric coating has 96% reflectivity at 550 nm. The ultimate coating for the deep sky obsessed. This coating is standard on all Obsession secondaries at no extra charge. Brilliant-Diamond is just one of the reasons Obsessions out perform all others.
With 96% enhanced on the primary and our standard 96% Brilliant Diamond secondary, the optical system is equivalent to an extra 2" of aperture!
12 volt cooling fan
12 volt cooling fan comes standard on all Classic and Ultra Compact scopes.
15” Obsessions use fused quartz for the primary mirror glass.
Argo Navis digital setting circles
with ultra res 32K encoders
ServoCAT Goto Drive System