instruction Manual Orion® TableTop Telescopes #9909 StarMax™ 90 TableTop Maksutov-Cassegrain #9541 SkyScanner™ 100 TableTop Reflector #9549 GoScope™ 80 TableTop Refractor #9549 #9541 #9909 Providing Exceptional Consumer Optical Products Since 1975 OrionTelescopes.com Customer Support (800) 676-1343 • E-mail: support@telescope.
Focuser 20mm eyepiece Focus knobs Secondary mirror holder EZ Finder II Reflex Sight Optical tube Telescope securing knob Primary mirror cell Altazimuth tabletop base Photo tripod adapter Figure 1a: The SkyScanner 100 TableTop Telescope Congratulations on your purchase of a TableTop telescope. The TableTop will provide years of enjoyment of many night-sky treasures including breathtaking views of the Moon, planets, and even some bright deep sky objects.
EZ Finder II Reflex Sight Finder scope base Corrector plate 10mm eyepiece Optical tube Telescope securing knob Star diagonal 25mm eyepiece Altazimuth tabletop base Photo tripod adapter Figure 1b: The StarMax 90 TableTop Telescope Altazimuth base: This wooden base provides a stable base for the telescope. It allows you to move the telescope in altitude (up/down) and azimuth (left/right).
EZ Finder II Reflex Sight Finder scope base Objective lens 10mm eyepiece Optical tube Telescope securing knob 90° star diagonal 20mm eyepiece Altazimuth tabletop base Photo tripod adapter Figure 1c: The GoScope 80 TableTop Telescope Dovetail Holder: Secures the telescope into the mini-Dob style mount by holding the dovetail bar preinstalled on the telescope tube.
Focus knob Dovetail holder Dovetail holder Altitude tension knob Dovetail bar (attached to telescope) Thumbscrew Figure 2: Detail of the Finder scope base Figure 1d: Rear and side view of the TableTop Telescope (90mm model shown) When unpacking the telescope it is suggested that you save the internal packaging. In the unlikely event the product needs to be returned the shipping materials can be re-used to ensure it arrives safely at its destination.
Azimuth adjustment knob Knurled ring Power knob Battery casing Altitude adjustment knob Mounting bracket Figure 4. The EZ Finder II reflex sight. Figure 6. The knurled ring of the diagonal connects to the threads on the rear of the GoScope. To change the viewing angle, loosen the knurled ring, rotate the diagonal, then retighten the ring. Thumbscrews Figure 5. The EZ Finder II superimposes a tiny red dot on the sky, showing right where the telescope is pointed.
Thumbscrews the dust cap from the front of the telescope when it is in use. Replace it when you are finished observing. Eyepiece Selection By using eyepieces of different focal lengths, it is possible to attain many magnifications or powers with the TableTop. Your telescope comes with two eyepieces: one for low power, wide field viewing, another for detailed high power observation. Other eyepieces can be used to achieve higher or lower powers.
1/4-20" adapter 3/8" thread Phillips head screws Figure 9a: Detail of the Photo tripod adapter Figure 9b: Removing the ¼"-20 adapter usage because the image in the eyepiece is inverted (upsidedown). The eyepiece will also be too low to the ground for comfortable viewing when pointed near the horizon. Altitude Tension Adjustment When aiming the telescope in altitude, you may find that the optical tube is either too hard to move or does not stay in place.
Figure 10: Mounting the TableTop base on a photo tripod Figure 11: Making optional adjustments to the azimuth tension sharp focus until the image starts to blur again, then reverse the rotation of the knob and stop when sharp focus has been achieved again. Especially important for observing faint objects is good “transparency” – air free of moisture, smoke, and dust. All tend to scatter light, which reduces an object’s brightness.
Magnification Limits Every telescope has a useful magnification limit of about 2X per millimeter of aperture. This comes to 200X for the SkyScanner 100mm TableTop. Some telescope manufacturers will use misleading claims of excess magnification, such as “See distant galaxies at 640X!”. While such magnifications are technically possible, the actual image at that magnification would be an indistinct blur. Moderate magnifications are what give the best views.
and Saturn are the brightest objects in the sky after the Sun and the Moon. Your TableTop is capable of showing you these planets in some detail. Other planets may be visible but will likely appear star-like. Because planets are quite small in apparent size, optional higher-power eyepieces are recommended and often needed for detailed observations. Not all the planets are generally visible at any one time. JUPITER: The largest planet, Jupiter, is a great subject for observation.
Do You Wear Eyeglasses? If you wear eyeglasses, you may be able to keep them on while you observe. In order to do this, your eyepiece must have enough “eye relief” to allow you to see the entire field of view with glasses on. You can try looking through the eyepiece first with your glasses on and then with them off, to see if the glasses restrict the view to only a portion of the full field.
Specifications #9541 SkyScanner 100 TableTop Optical design Reflector #9549 GoScope 80 TableTop Optical design Refractor Primary mirror Parabolic Primary mirror coating Aluminum with SiO2 overcoat Objective lens Achromatic, air-spaced, fully coated Secondary mirror diameter Aperture 80mm Focal length 350mm Focal ratio f/4.3 Diagonal 90° prism, accepts 1.25" eyepieces Eyepieces 20mm eyepiece (18x) and 10mm eyepiece (35x), fully coated, 1.
Aligning the Secondary Mirror Only the secondary mirror can be adjusted on the TableTop. If the secondary mirror seems off center, or the star test as described above is showing an elliptical or off center diffraction pattern you may need to adjust the tilt of the mirror using the three allen-head screws on the secondary holder.
One-Year Limited Warranty The Orion TableTop Telescopes are 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.
