About this product
Tele Vue Bandmate H-Beta filter
Designed and manufactured exclusively for Tele Vue by Astronomik.
Every filter is first tested by Astronomik on a spectrograph to ensure the coating meets design specifications, then optically tested by Tele Vue at high magnification to ensure no image degradation.
Ten-year warranty against manufacturing defects.
- Manufactured exclusively for Tele Vue by Astronomik.
- Passes the hydrogen-beta emission lines found in the Horsehead, California and other hydrogen emitting nebulae.
- Blocks skyglow from artificial lighting.
- Effective for viewing objects that take up the entire field - even when using wide angle eyepieces.
- Tested by Astronomik on a spectrograph.
- Optically tested by Tele Vue at high magnification.
- Ten-year warranty against manufacturing defects.
|Model ||3-6mm |
|Focal Length (mm) ||3-6 |
|Barrel Size (in.) ||1¼" |
|Apparent Field of View (deg.) ||50 |
|Eye Relief (mm) ||10 |
|Weight (lb / oz) ||0.33 / 5.3 |
|Field Stop (mm) ||5.1 - 2.6 |
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