BestOutdoorGear

1. LAIDA 2.1x42 Wide-Field Binoculars for Star Field Observing Constellations Star Fields Star Clusters - Observed At Low Magnification

Constellations, star fields, star clusters - observed at low magnification. These mini-binoculars let you observe the night sky as if your eyes were suddenly much more capable. You can observe entire constellations and star fields, but the stars are brighter and clearer and you can make out much more than just with the naked eye - as if you suddenly had a 'super eye', just for the night sky.

Feature:

1. Like a pair of glasses that you can observe the stars through

2. Extremely 'fast' - 42mm aperture and 2.1X magnification

3. Super wide field of view - observe entire constellations

4. Clearly more stars seen than with the naked eye - even with light pollution （standard 2-inchM48*0.75  thread and supports 2-inch UHC CLS filter installation）

5. Comfortable observing, even with glasses

Specifications:

1. Magnification: 2.1x

2. Lens Diameter: 42mm

3. Eye Relief: 9.5mm

4. Exit Pupil: 19mm

5. Field Angle: 26°

6. Close Focus: 3.28ft

7. Inter Pupillary Distance: 56 - 75mm / 2.1- 2.9in

8. Relative Brightness: 361

9. Apparent Visual Magnitude: 9.88

10. Objective lens of Thread: M48*0.75

11. Tripod Adapter interface: UNC 1/4-20

12. Lens Coatings: FMC

13. Net Weight: 380g

Package Includes:

• 2.1x42 wide-field binoculars

• Carrying Case

• Hand Strip

• Lens Covers

• Lens Cleaning Cloth

• User Manual

OPTOLONG 2" CLS Filter

The City Light Suppression broadband filter is designed to improve the visibility of various Deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purpose at sub-rural area.

OPTOLONG 2"UHC Filter

The Optolong UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deep sky objects. It does this by: Selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lighting (including mercury vapor lamps, both high & low pressure sodium vapor lights, and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow)). Being highly transparent to the main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm).