Important Information About Your Edge Hd 8" Optical Tube Assembly - Celestron NexStar EVOLUTION 8 EDGE HD Guía De Instalación Rápida

2 . Open SkyPortal, tap the scope icon, and tap "Connect
and Align" . Follow the on-screen prompts and StarSense
will automatically align your telescope .
StarSense is aligned, but there's just one fi rst-time-
only step before you're ready to go: Calibrate the
camera to the telescope.
3 . After the StarSense alignment is complete, select a
bright star in SkyPortal by tapping it on the screen, then
tap "GoTo" . If the star is not in the eyepiece's fi eld of
view, start by centering it in the StarPointer, then center
it in the eyepiece .
With the star centered in the eyepiece, tap Align, then
tap Calibrate . Once the camera is calibrated, follow the
prompts to start a new StarSense Auto alignment . You
only need to do this the fi rst time you are using
StarSense with the telescope in SkyPortal .
Aligned and Ready to Observe!
Tap objects on your screen and select GoTo, or search for
a specifi c object in the search fi eld . To start out, you can
choose from "Tonight's Best" list in SkyPortal under the
Search menu .
Important Information About Your
Edge HD 8" Optical Tube Assembly
Your EdgeHD is optimized for both visual astronomy and
astrophotography, delivering images free of coma or fi eld
curvature across a large image circle . Start by using the
supplied 1 .25" visual back, Star Diagonal, and eyepieces
to familiarize yourself with the telescope .
Primary Mirror Clutch Knobs
(for Astrophotography Only)
These clutch knobs (shown in overview image) hold the
mirror in place to prevent movement during a long exposure
astrophoto . Keep these loosened unless you are using a
camera for long exposures .
When using a camera, focus the telescope fi rst, then tighten
the knobs .
Warning: Do not turn the focus knob with the clutch
knobs tightened. Anytime you refocus the telescope,
loosen the clutch knobs.
Optimum Camera Distance
The 8" EdgeHD was designed to work with your camera at
a specifi c distance from the end of the threads (of the adapter
plate shown in the diagram) on the back of the scope to the
camera's sensor .
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If you are using a DSLR, the distance is already set correctly
when you use these standard adapters available from Celestron:
T-ring for the make and model of your camera
T-adapter for 8" EdgeHD
If you are using an astronomical CCD camera, you must
determine the necessary adapter length to the camera body .
The total distance from the end of the adapter plate
threads to the camera sensor should be 133mm.
This is the total required backfocus distance . Your camera
body to the imaging sensor will take up some of this backfocus
distance . Your camera manufacturer will usually specify
the camera backfocus distance . For example, if your
camera's backfocus distance is 55mm, then you will need
78mm of spacing to reach 133mm .
Fastar Compatibility and Imaging at f/2
Your EdgeHD 8" is equipped with a removable secondary
mirror that allows you to convert your f/10 telescope into an
f/2 imaging system using an optional lens accessory made
by Starizona . This adds versatility to use the telescope at
different focal ratios for astrophotography . Imaging at f/2 is
favored for wide-angle deep sky imaging with short expo-
sures, well suited to large deep sky objects .