This belonged to my late brother. I recently sold his telscopes and am now listing a few odds and ends.
I found the information below at the Seymour website. It retails for 69.00 british pounds which is about 90.00 US $.
Outer Diameter Measurement: 99 - 105mm
To Fit Meade ETX 90
This filter also fits:
All Optical Tube O.D.'s of 98-105mm
Meade ETX 90, NG-70 w/ dew shield
Celestron NexStar 60, 80, and 80GT
Celestron FirstScope 90EQ
Orion StarMax 90 and Apex 90
StellarVue NightHawk Aplanat
NightHawk Next Generation (w/ dew shield)
SV809D (w/ dew shield)
Williams Optics ZS80 II ED and Megrez 80
High quality glass solar filter housed in an aluminium cell.
These high quality filters are type 2 glass which means you will see an orange/yellow view of the sun. These filters are designed for observing sun spots.
They are very well made and are 100% safe to use as all are fully tested before dispatch.
These are a push on solar filter and also have the added security of nylon set screws to ensure the best fit to your scope.
To ensure you get the best fit to your scope, measure the outer diameter in inches. Then go for the next size up. For Example, if your scope measures 5.6" diameter, then the 5.75" filter will fit. To double check compatibility, please just call us or email us.
Filed under: Eyepieces & Accessories