Explore Scientific David H. Levy Comet Hunter Owner'S Manual Download Page 13

Page: 13 / 14

Specifications

Optical design:

Maksutov-Newtonian

Diameter (primary mirror):

152 mm (6“)

Diameter (secondary mirror):

46 mm

Obstruction:

49 mm

Focal length:

731 mm

Focal ratio:

f/4.8

Resolving power:

0.74 arc seconds

Material (primary mirror):

BK-7

Coatings:

Enhanced Multi-Layer Deposition (EMD

™) Coatings on Primary Mirror and

Corrector Plate; 99% Dielectric Coating on Secondary Mirror

Weight (net):

7.3 kg

Length:

690 mm

Diameter (tube):

177 mm

Summary of Contents for David H. Levy Comet Hunter

Page 1: ...Owner s Guide David H Levy Comet Hunter 152mm f 4 8 Maksutov Newtonian Telescope...

Page 2: ...ke movement safe and easy When lifting the Comet Hunter telescope from its case use the handle provided from the cradle ring and gently pull the instrument until it is free from the foam padding of th...

Page 3: ...n be passed on to future generations of would be astronomers We discussed a lot of ideas settling on a six inch 152mm aperture f 4 8 rich field system We then selected a rugged Maksutov Newtonian opti...

Page 4: ...e with friends and family you ll find that it will be a truly mind expanding experience for them and for yourself While sharing the eyepiece of your Comet Hunter to show others the belts of Jupiter or...

Page 5: ...2 Cradle Rings with Handle 3 8x50 Correct Image Finderscope 4 Finderscope Illuminator 5 10 1 Two Speed Focuser 6 Focus Lock Knob 7 Focus Tension Knob 8 30mm 70 Series Eyepiece 9 2 to 1 25 Eyepiece Ad...

Page 6: ...objective lens focus adjustment by turning it counterclockwise while firmly holding the objective lens focus lock ring 1 Fig 3 Further separate the objective lens focuser 2 Fig 3 and the focuser lock...

Page 7: ...red The batteries will last several hours of continuous illumination less in cold weather more in warm conditions When not using the finder scope turn the illuminator off by turning the knob counter...

Page 8: ...he dust cover release the eyepiece holder set screw and slide the eyepiece barrel into the focuser Tighten the eyepiece holder set screw to secure the eyepiece To use 1 25 O D eyepieces slide the 1 25...

Page 9: ...rformance Confirm Alignment To confirm optical alignment look down the focuser drawtube 1 Fig 10 with the eyepiece removed The edge of the focuser drawtube frames reflections of the primary mirror 2 F...

Page 10: ...head screw by using a wide flat head screwdriver to unthread it from the secondary holder Primary Mirror Adjustments If the secondary mirror 1 Fig 10 and the reflection of the primary mirror 2 Fig 10...

Page 11: ...desiccant stored in the telescope s case to ward off moisture and the possibility of fungus or mold growing on and within the coatings of the optics Replace the desiccant as often as necessary Those...

Page 12: ...f just spreading them over the optical surfaces If you are cleaning small optical surfaces you can roll the tissue into a small wand use a cotton swab alone or use a tissue wrapped cotton swab dependi...

Page 13: ...6 mm Obstruction 49 mm Focal length 731 mm Focal ratio f 4 8 Resolving power 0 74 arc seconds Material primary mirror BK 7 Coatings Enhanced Multi Layer Deposition EMD Coatings on Primary Mirror and C...

Page 14: ...2009 Explore Scientific BRESSER A JOC Company 7401 Katelyn Ct Suite A San Diego CA 92120 USA Rev 1 1 Tel 1 888 599 7597 Fax 1 888 877 7248 www explorescientific com Part No UG CH102009...

Search results

Summary of Contents for David H. Levy Comet Hunter

Reviews:

Related manuals for David H. Levy Comet Hunter

Brands by name

Popular brands

Explore Scientific David H. Levy Comet Hunter, Owner'S Manual

Search results

Summary of Contents for David H. Levy Comet Hunter

Reviews:

Related manuals for David H. Levy Comet Hunter

Brands by name

Popular brands