Starfield Optics Inc
Starfield 80mm Dewheater (DH-8) $84.95
Dew heater with 80 cm strap is designed to fit 7/8" telescopes. Works with 12V power supply and produces 16W of power. Equipped with standard RCA plug for compatibility with popular controllers. Comes with 2m silicone cable. The strong Velcro strap makes it easy to wrap it around your telescope and hold it in place. Note! The OTA size is only estimated. Please check your OTA circumference before buying.
Starfield Optics Inc
Starfield 6" / 8" Dewshield $69.95
. Protect your SCT or MAK telescope from dew forming on the corrector plate.   The Starfield dual sized dew shields wi fit 8" and 6" SCT's. Made  out of flexible  ABS, flocked  to prevent stay light reflections, and heavy duty Velcro  that is stitched for added quality.    Easy to notch if required.    
Starfield Optics Inc
Starfield 200mm Focus Mask $50.00
The  Bahtinov mask  is used focus sma telescopes accurately. Although  masks  have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel  Bahtinov.     The  Bahtinov mask  is used focus sma telescopes accurately. Although  masks  have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel  Bahtinov.     Simply place the mask in front of the main optic of your telescope and take a picture.  Look at the diffraction spike pattern and continue until the spikes are even.    Using a Bahtinov mask is the easiest...
Starfield Optics Inc
Starfield 140mm Focus Mask (FM-140) $39.95
The Bahtinov mask is used focus small telescopes accurately. Although masks have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel Bahtinov. Description Simply place the mask in front of the main optic of your telescope and take a picture. Look at the diffraction spike pattern and continue until the spikes are even. Using a Bahtinov mask is the easiest way to get into focus. This 140mm mask is great for 125mm - 130mm class telescopesFits dew shields with an outside diameter of 153-192mm
Starfield Optics Inc
Starfield 180mm Focus Mask $45.00
The Bahtinov mask is used focus sma telescopes accurately. Although masks have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel Bahtinov.   Simply place the mask in front of the main optic of your telescope and take a picture.  Look at the diffraction spike pattern and continue until the spikes are even.    Using a Bahtinov mask is the easiest way to get into focus. This 180mm mask is great for 150 - 165mm class telescopes Fits dew shields with an outside diameter of 185-210mm
Starfield Optics Inc
Starfield 160mm Focus Mask $45.00
The Bahtinov mask is used focus sma telescopes accurately. Although masks have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel Bahtinov. Description Simply place the mask in front of the main optic of your telescope and take a picture. Look at the diffraction spike pattern and continue until the spikes are even. Using a Bahtinov mask is the easiest way to get into focus. This 160mm mask is great for 140 - 150mm class telescopesFits dew shields with an outside diameter of 175-212mm
Starfield Optics Inc
Starfield 120mm Focus Mask $29.95
This 120mm mask is great for 105 - 125mm class telescopes, Fits dew shields with an outside diameter of 120-152mm    
Starfield Optics Inc
Starfield 100mm Dewheater (DH-10) $105.00
Dew heater with 100 cm strap is designed to fit 10/11" telescopes. Works with 12V power supply and produces 20W of power. Equipped with standard RCA plug for compatibility with popular controllers. Comes with 2m silicone cable. The strong Velcro strap makes it easy to wrap it around your telescope and hold it in place. Note! The OTA size is only estimated. Please check your OTA circumference before buying.

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