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Celestron offers a full line of optional accessories for your Firstscope telescope. Please consult the Celestron
Accessory Catalog (#93685) for a complete description.
Eyepieces - An assortment of 1¼" eyepieces are available to give you a wide range of magnifications.
• OMNI Plössl - Plössl eyepieces have a 4-element lens designed for low-to-
high power observing. The Plössls offer razor sharp views across the entire
field, even at the edges! In the 1-1/4" barrel diameter, they are available in
the following focal lengths:
4mm, 6mm, 9mm, 15mm, 20mm, 25mm,
32mm
and 40mm.
•
Ultima - Ultima is not really a design, but a trade name for our 5-element,
wide field eyepieces. In the 1-1/4" barrel diameter, they are available in
the following focal lengths: 5mm, 7.5mm, 12.5mm, 18mm, 24mm, 30mm,
35mm, and 42mm. These eyepieces are all parfocal. The 35mm Ultima
gives the widest possible field of view with a 1-1/4" diagonal.
Eyepiece filters - To enhance your visual observations, individual filters and
sets are available for 1¼" eyepieces.
Flashlights - Celestron’s #93592 and #93588 LED (light emitting diode) flashlights conveniently allow
you to read star maps without diminishing your night vision. Both feature adjustable brightness and are
small and lightweight, (#93592 is only 6 inches long, and weighs in at a mere 3 ounces).
Light Pollution Reduction (LPR) Filter (#94126A) - A 1¼" filter that threads into a 1¼" eyepiece,
designed to enhance your views of deep-sky astronomical objects when observed from urban areas. The
LPR filter selectively reduces the transmission of certain wavelengths of light, specifically those produced
by artificial lights. This includes mercury, and high and low pressure sodium vapor lights. Additionally, it
blocks unwanted natural light (also known as sky glow).
Sky Maps (#93722) - When learning the night sky, Celestron Sky Maps offer just the guidance you need.
The maps show all the constellations and brighter deep-sky objects and are printed on heavy, moisture-
resistant paper for durability. The front cover features a rotating planisphere, indicating when specific
constellations are visible.
Solar Filters - Celestron’s AstroSolar® solar filters permit completely safe, direct observation of the sun.
This filter, which transmits .00001% of visible light, allows sunspots to be seen as they move across the
solar disk. While reducing the intensity of the sun's visible light, it also blocks 99.999% of invisible
infrared light. The solar filter is made of precision engineered polyester film. A layer of aluminum is
vacuum-deposited on the surface of the sheet used to make each filter. This aluminum coating produces a
cool, comfortable, pale blue image of the sun. A #21 orange eyepiece filter works well in conjunction with
the filter to produce a more naturally colored image of the sun.
Peterson First Guides® - Astronomy
A simplified field guide to the stars, the planets and the universe featuring full color maps showing the positions of
the stars throughout the year. This useful guide also includes beautiful constellation paintings, photographs, and
clear, concise descriptions of stars, the planets, the sun, the moon, comets, black holes, galaxies and more.
Planisphere (#93720) - A colorful rotating star map that indicates when specific constellations are visible,
with removable markers for tracking the movement of planets. Available in three different latitudes: 30°, 40°,
and 50° all ±10°.
A full description of all Celestron accessories can be found in the Celestron Accessory Catalog (#93685).