Description
The new, longer retractable dew shield slows the formation of dew on the lens to extend your undisturbed observing time. The longer dew shield also improves visual and photographic contrast by shielding the lens from off-axis ambient light (the neighbor’s yard light, moonlight, etc.) For transport, the retractable lens shade keeps the overall length of the optical tube to a manageable 25.5″ when it is retracted.
Mounting rings: No mounting rings are supplied for the 101mm diameter optical tube. The optional TeleVue #MRS4 dual 4″ mounting ring set is designed specifically for installing the NP101is on wide variety of equatorial mounts and mounting adapters.
Finderscope mounting point: No finderscope is supplied. However, dovetail accessory mounting slots for a finderscope and other accessories (such as a piggyback camera mount) are provided on the optional TeleVue #MRS4 dual mounting ring set.
Carrying case: A custom foam-fitted locking hard shell case is standard. The case has a large accessory compartment built into its lid.
Tech Details:
| Aperture | 4″ |
|---|---|
| Focal Length | 540mm |
| Focal Ratio | f/5.4 |
| Heaviest Single Component | 11 pounds |
| Highest Useful Magnification | 216x |
| Weight | 11 lbs. |
| Resolution | 1.15 arc seconds |
| Visual Limiting Magnitude | 12.5 |
| Warranty | 5 years |
Supplied Accessories:
- Lens shade
- Dust cover
- Hard case
- Visual adapter ring
- Imaging adapter ring
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