Celestron FIRSTSCOPE 80 EQ - Telescope Maintenance; Specifications and Standard Accessories

4. Watch Venus and Mercury as they go through their moon-like phases.
C. The Sun is quite safe to view if you utilize a proper solar filter (Celestron Model #94135). You can
detect and watch the ever-changing sunspot activity.
Remember to cover the finderscope when using a solar filter.
D. Deep-Sky objects (those outside our solar system) offer a lifetime of observing. There are hundreds of
objects within the realm of your telescope including open and closed star clusters, planetary and
diffuse nebulae, galaxies, double stars and occasional comets.
The amount of detail you can see is dependent on your observing site (dark sky rural locations are
best), atmospheric conditions, brightness of the object, collimation and your observing experience.
7. TELESCOPE MAINTENANCE
With proper care your telescope should rarely need any maintenance work.
A. When not in use, always replace all lens covers to keep dust and contaminants off the optical surfaces.
B. A small amount of dust on any optical surface is OK. If the dust builds up then use a can of
compressed air and then a camel-hair brush to remove the dust. To remove fingerprints or other
contaminants, use an optical cleaning kit or the Celestron Lens Pen (#93575).
C. I f the objective lens needs cleaning, it should be cleaned by a professional. Either have your
instrument serviced by a telescope repair facility or return it to the factory.
8. SPECIFICATIONS AND STANDARD ACCESSORIES
Optical System:
Aperture:
Focal Length:
F/ratio:
Focuser
Coatings
Standard Ocular
Magnification with standard eyepiece
Exit Pupil with standard eyepiece:
Highest Useful Power Magnification:
Resolution: (Rayleigh Criterion)
Achromat Refractor
80mm
910mm
f/11
1-1/4" Rack and Pinion
Multi-Coated
25mm SMA 1-1/4”
36x
2.2 mm
189x
1.73 arc seconds
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