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Celestron Newtonian Specifications

Item Number 31034 31032 31041 31044 31142 31056 31058
 Description Tabletop 76 Firstscope 76 EQ Firstscope 114 Short Firstscope 114 NexStar 114 GT C150-HD G-8N

Standard Equipment 

Optical Tube 76mm (3") Reflector 76mm (3") Reflector 114mm (4.5") Reflector 114mm (4.5") Reflector 114mm (4.5") Reflector 150mm (6.0") Reflector 200mm (8.0") Reflector
Focal Length 600mm F/8 700mm F/9 1000mm F/9 900mm F/8 1000mm F/9 1000mm F/7 1000mm F/5
Finderscope 5x24 Right Angle Star Pointer Star Pointer Star Pointer Star Pointer 6x30 9x50
Mount Altazimuth Tabletop Equatorial Equatorial Equatorial Motorized Altazimuth Heavy Duty Equatorial Heavy Duty Equatorial
Eyepiece 20mm H .96"(30x) 20mm Kellner (35x) 20mm Kellner (50x) 20mm Kellner (45x) 25mm SMA (40x) 20mm Plössl (50x) 20mm Plössl (50x)
Eyepiece 4mm H .96"(150x) 10mm Kellner (70x) 10mm Kellner (100x) 10mm Kellner (90x) 10mm SMA (100x) n/a n/a
Accessory Tray n/a yes yes yes yes yes yes
Tripod Tabletop Aluminum Aluminum Aluminum Pre-assembled Aluminum Aluminum Aluminum
CD ROM The Sky L1 The Sky L1 The Sky L1 The Sky L1 The Sky L1 & GuideStar The Sky L1 The Sky L1
Computer Hand Control n/a n/a n/a n/a Fully Computerized n/a n/a
Database n/a n/a n/a n/a 4,000 Object Database n/a n/a
Technical Specifications
Highest Useful Magnification 180x 180x 269x 269x 269x 354x 480x
Lowest Useful Magnification 11x 11x 16x 16x 16x 21x 29x
Limiting Stellar Magnitude 11.9 11.9 12.8 12.8 12.8 13.4 14
Resolution:Rayleigh 1.82 arc seconds 1.82 arc seconds 1.21 arc seconds 1.21 arc seconds 1.21 arc seconds .92 arc seconds .69 arc seconds
Dawes Limit 1.53 arc seconds 1.53 arc seconds 1.02 arc seconds 1.02 arc seconds 1.02 arc seconds .77 arc seconds .58 arc seconds
Photographic Theoretical Resolution at 410 nm 250 
line/mm
217 
line/mm
228 
lines/mm
250
 lines/mm
228
 lines/mm
286
 lines/mm
400 
lines/mm
Light Gathering Power 118x
 unaided eye
118x 
unaided eye
265x
 unaided eye
265x
 unaided eye
265x 
unaided eye
459x
 unaided eye
843x
 unaided eye
Field of View: standard eyepiece 1.6° 1.5° 1.0° 1.2° 1.3° 1.0° 1.0°
Linear FOV (@1000 yds) 87.5 ft 78 ft 52.5 ft 60 ft 68 ft 52.5 ft 52.5 ft
Optical Coatings Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum
Secondary Mirror Obstruction 1.1"(13% by area) 1.2"(16% by area) 1.6"(13% by area) 1.6"(13% by area) 1.6"(13% by area) 2.2"(13% by area) 2.9"(13% by area)
Optical tube length 11 inches 27 inches 19 inches 35 inches 19 inches 19 inches 20 inches
Telescope Weight 4 lbs 15 lbs 16 lbs 19 lbs 15 lbs 28 lbs 31 lbs

Support

The Registry of Nature Habitats - Buy Conservation Credits


For purchasing Conservation Credit(s)
You will receive
a copy of the John Audubon Multimedia CD
A replica of the complete (1840-1844)
James Audubon's Birds of America

You will also receieve a bluebird house for each Conservation Credit purchased and a 20% off coupon to be used on the A Bird's Home website!




Conservation Certificates

The Registry of Nature Habitats - Mission Statement

The Registry of Nature Habitats is dedicated to the preservation of land that, over time, has been a site and home for complex ecosystems. The Registry advocates preservation of these lands and its inhabitants, environmental education for community individuals and groups, and nurturing of these lands through restoration in order to conserve its natural resources for future generations.

Preserve

The Registry of Nature Habitats manages critical habitat, consisting of wetland, lowland, upland, forest and stream habitat, providing a home to wildlife species and plant species. As part of the mission to preserve these lands and its inhabitants, the Registry will continue to contract with owners of ecologically sensitive land as it becomes available.

Educate

The Registry of Nature Habitats is a "teaching ground," able to provide hands-on, interpretive learning experiences in areas such as ecology, botany, wildlife science, and geology, as well as the arts and humanities. The educational mission of The Registry of Nature Habitats is to teach an understanding and appreciaton of the environment, the invaluable lesson of land stewardship of our natural resources, and to expand the general knowledge of this habitat through scientific research. This will be accomplished through a year-round experiential, interactive approach, along with onsite and outreach activities including providing educational material both on this website, on media and through educational seminars. An on-site facility is in the design phase, which will house classrooms and an administrative space.

Nurture

Through several restoration projects, including the rebuilding of stream corridors, reintroducing native flora, and permitting only low-impact activities, the Registry is nurturing much land back to its natural state, undoing the damage of hundreds of years. The Registry of Nature Habitats restoration plan, developed with public and private partnerships and with local community support, will increase the land's value, enhance wildlife habitat, improve water quality, and preserve the integrity of the land's bio-diversity.

Renewable Energy

Promote the use of renewable and efficient energy technologies through education, training, workforce development, research, and project facilitation. The Registry supports clean energy development and energy conservation as the means to protect the environment, enhance public health, and save our nature habitats.

Conservation

We seek to educate people and provide innovative solutions that will help build a clean, more efficient world, by reducing energy consumption in a prudent way that does not threaten the natural balance that supports all life.




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