Celestron EdgeHD 9.25 Handleiding

Celestron Niet gecategoriseerd EdgeHD 9.25

Lees hieronder de 📖 handleiding in het Nederlandse voor Celestron EdgeHD 9.25 (21 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 306 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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Pagina 1/21
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INSTRUCTION MANUAL
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Your telescope is designed to give you years of fun and rewarding observations. However, there are a few things to consider before using
your telescope that will ensure your safety and protect your equipment.
Warning
Never look directly at the sun with the naked eye or with a telescope (unless you have the proper solar
filter). Permanent and irreversible eye damage may result.
Never use your telescope to project an image of the sun onto any surface. Internal heat build-up can damage the telescope and any
accessories attached to it.
Never use an eyepiece solar filter or a Herschel wedge. Internal heat build-up inside the telescope can cause these devices to crack or
break, allowing unfiltered sunlight to pass through to the eye.
Never leave the telescope unsupervised, either when children are present or adults who may not be familiar with the correct operating
procedures of your telescope.
Technical Specs
Highest Useful Magnification 480x 555x 660x 840x
Lowest Useful Magnification 29x 34x 40x 51x
Limiting Stellar Magnitude 14 14.4 14.7 15.3
Resolution: Rayleigh .68 arc seconds .59 arc seconds .50 arc seconds .39 arc seconds
Dawes Limit .57 arc seconds .49 arc seconds .42 arc seconds .33 arc seconds
Light Gathering Power 843x unaided eye 1127x unaided eye 1593x unaided eye 2579x unaided eye
Field of View: standard eyepiece .85º .8º .67º .48º
Linear FOV (@1000 yds) 44 ft. 42 ft. 35 ft. 25 ft.
Optical Coatings - Standard Starbright XLT Coating Starbright XLT Coating Starbright XLT Coating Starbright XLT Coating
Secondary Mirror Obstruction 2.7" 3.35" 3.75" 4.5"
by Area 11% 13% 12% 10%
by Diameter 34% 36% 34% 32%
Optical tube length 17 inches 22 inches 24 inches 31 inches
#91030
-
XLT
#91040
-
XLT
#91050
-
XLT
#91060
-
XLT
EdgeHD 800 EdgeHD 925 EdgeHD 1100 EdgeHD 1400
Diameter
203mm (8") EdgeHD
Optics 235mm (9.25") EdgeHD
Optics 280mm (11") EdgeHD
Optics 356mm (14") EdgeHD
Optics
Focal Length 2032mm F/10 2350mm F/10 2800mm F/10 3910mm F/10
Eyepiece 40mm - 1.25" (51x) 23mm - 2" (102x) 23mm - 2" (122x) 23mm - 2" (170x)
Finderscope 9x50 9x50 9x50 9x50
Diagonal 90° - 1.25" 90° - 2" with 1.25"
adapter 90° - 2" with 1.25"
adapter 90° - 2" with 1.25"
adapter
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The visual back is the accessory that allows you to attach all visual accessories to the 8" telescope. The 8" telescope optical
tubes come with the visual back installed. If it is not already on the tube it can be attached as follows:
1. Remove the rubber cover on the rear cell.
2. Place the knurled slip ring on the visual back over the threads on the rear cell (Fig 1-1).
3. Hold the visual back with the set screw in a convenient position and rotate the knurled slip ring clockwise until tight.
Once this is done, you are ready to attach other accessories, such as eyepieces, diagonal prisms, etc.
If you want to remove the visual back, rotate the slip ring counterclockwise until it is free of the rear cell.
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The star diagonal is a prism or mirror that diverts the light at a right angle to the light path of the telescope. This allows you
to observe in positions that are physically more comfortable than if you looked straight through.
To attach the 1.25" star diagonal onto the 8" optical tube:
1. Turn the set screw on the visual back until its tip no
longer extends into (i.e., obstructs) the inner diameter of
the visual back.
2. Slide the chrome portion of the star diagonal into the
visual back.
3. Tighten the set screw on the visual back to hold the star
diagonal in place.
If you wish to change the orientation of the star diagonal, loosen
the set screw on the visual back until the star diagonal rotates
freely. Rotate the diagonal to the desired position and tighten the
set screw.
To attach the 2" star diagonal onto the 9.25/11/14" optical tubes:
1. Remove the visual back from the rear of the tube.
2. Attach the threaded ring of the 2" diagonal to the rear cell of
the telescope.
3. Loosen the thumb screws on the side of the diagonal and
remove the 1.25" adapter from the barrel of the diagonal.
If you wish to change the orientation of the 2" star diagonal, loosen the
retaining ring that attaches the diagonal to the rear cell. Rotate the
diagonal to the desired position and tighten the retaining ring.
1.25" Star
Diagonal
Visual Back
1.25"
Eyepiece
Figure 1-1 – Visual accessories for the 8"
2" Mirror
Diagonal
2 inch
Eyepiece
Figure 1-2 – Visual accessories for the 9.25/11/14"

Product specificaties

Merk: Celestron
Categorie: Niet gecategoriseerd
Model: EdgeHD 9.25

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