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Orion StarSeeker
The StarSeeker IV 150mm Maksutov-Cassegrain GoTo
Telescope (#13166, Figure 1) is a new addition to the
StarSeeker IV line and not included in the instruction manual
(IN 542 Rev A) for the StarSeeker IV series of telescopes.
It is similar to the StarSeeker IV 127mm Maksutov-Cassegrain,
but has a larger aperture optical tube assembly. One feature
specific to the StarSeeker IV 150 Mak-Cass is a 2" visual back
adapter with a 2"-to-1.25" adapter. This allows the user to use
either 2" or 1.25" diagonals and eyepieces with the 150mm
Mak-Cass, for added versatility (Figure 2).
To install a 2" diagonal, first remove the 1.25" adapter by
loosening the two thumbscrews on the 2" visual back, then
insert the barrel of the diagonal. Secure it in place with the two
thumbscrews. Then insert an eyepiece into the diagonal and
secure it with the thumbscrew(s) on the diagonal.
To insert a 1.25" diagonal instead of a 2" diagonal, leave the
1.25" adapter in the 2" visual back, and insert the barrel of the
1.25" diagonal into the 1.25" adapter. Secure it in place with
the thumbscrew.
Providing Exceptional Consumer Optical Products Since 1975
All Rights Reserved. No part of this product instruction or any of its contents may be reproduced, copied, modified or adapted, without the
Addendum to IN 542 Rev A
Figure 1.
The StarSeeker IV 150mm Maksutov-Cassegrain GoTo Telescope.
Copyright © 2015-16 Orion Telescopes & Binoculars
prior written consent of Orion Telescopes & Binoculars.
IV GoTo Telescopes
™
2" visual back
1.25" adapter
Figure 2.
The 2" visual back and 1.25" adapter allow use of both 2"
and 1.25" accessories.
Warning: Never look directly at the Sun through
your telescope—even for an instant—without a
professionally made solar filter that completely
covers the front of the instrument, or permanent eye
damage could result. Young children should use this
telescope only with adult supervision.
Customer Support:
www.OrionTelescopes.com/contactus
Corporate Offices:
89 Hangar Way, Watsonville CA 95076 - USA
IN 561 11/15
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Summary of Contents for ORION TELESCOPES & BINOCULARS StarSeeker IV GoTo
- Page 1 Addendum to IN 542 Rev A Orion StarSeeker IV GoTo Telescopes ™ Figure 1. The StarSeeker IV 150mm Maksutov-Cassegrain GoTo Telescope. The StarSeeker IV 150mm Maksutov-Cassegrain GoTo Telescope (#13166, Figure 1) is a new addition to the StarSeeker IV line and not included in the instruction manual 2"...
- Page 2 Terrestrial Viewing Collimating the Optics For daytime land viewing, we recommend using a “correct image” Collimating is the process of aligning a telescope’s optics. Your 45-degree diagonal so that the image viewed through the tele- Maksutov-Cassegrain's optics were aligned at the factory and scope is oriented correctly.
- Page 3 Secondary Secondary mirror mirror Reflection of Reflection of Front of your eye in Front of your eye in telescope secondary telescope secondary mirror mirror Secondary Reflection of reflection of inside of tube inside of tube (misalignment) Figure 4 a) If the telescope’s optics are out of alignment, the view through the rear opening of the telescope will look like this. B) When the optics are properly collimated the view will look like this.
- Page 4 One-Year Limited Warranty This Orion product is warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076.