The Explore Scientific 2" S-II Nebula Filter (12nm) filter uses the property of the so-called emission mist. These objects glow in certain colors, the so-called emission lines. The emission lines are linked to certain chemical elements, in this case ionized sulfur. This filter blocks almost all artificial light to improve viewing of nebulae, passing only the emission lines of the the ionized sulfur at 672nm. The effect is amazing: Suddenly fog becomes visible in the photos in places that appear completely empty without a filter. The Explore Scientific mist filters are supplied with an individual test report, so you can be sure that you are receiving high-quality filters.

• High quality Explore Scientific S-II filter
• Absorbs all other emission lines
• Absorbs almost all artificial light
• Passband bandwidth: 6.5nm
• For observing faint planetary nebulae, emission nebulae and supernova remnants
• More contrast and details for all urban observers and astrophotographers
• An individual test report of this premium filter is included

Related Questions and Answers

Q: 1. Will this fit the Sky Watcher 127mm MakCas and how long will it take to get it in?

A: The telescopes listed as compatible for the Explore Scientific Cradle Assembly for White 127mm Telescope are": The Explore Scientific AR127 Explore Scientific ED127 Explore Scientific FCD100 ED127 Explore Scientific FirstLight And the computer says, the Cradle Ring will be in 7 to 14 days from the day it is ordered.

Q: 2. Is this a Bird Jones design?

A: Explore Scientific does not indicate if the Explore Scientific FirstLight 114mm f/4.3 Reflector Telescope BH #EXFLN114NT • MFR #FL-N114500TN has a spherical primary mirror in place of a parabolic one, with spherical aberrations corrected by sub-aperture corrector lens usually mounted inside the focusser tube or in front of the secondary mirror.

Q: 3. How much does this cradle assembly weigh?

A: It weighs about 2 lbs.

Q: 4. HOW THIS EYEPIECE'S QUALITY COMPAIR TO THE 24 MM PANOPTIC EYEPIECE ?

A: The Panoptic is slightly better... it's nowhere near 2x better, which is usually the price difference. I tested out quite a few televue vs ES eyepieces in 68, 82, and 100 degrees and have always found the ES to be the best bang for the buck by a pretty noticeable margin.

Q: 5. The image from the telescope is upside down and backwards. How do I fix this?

A: You would just need to add a 90 Degree Star Diagonal. The Celestron 90° Star Diagonal (1.25") will work. Link: https://bhpho.to/3t4ZEMK

Q: 6. Can i know Explore Scientific 8x56 G600 ED Binoculars weight

A: The Explore Scientific 8x56 G600 ED Binoculars weigh 2 pounds.

Q: 7. Can this be used for Deep Sky Photography?

A: Yes, it would be possible.

Q: 8. Will this [safely] fit a 130mm (5.1") reflector?

A: This is made for 127mm Telescopes I do not believe this will work with a 130mm Scope. My apologies.

Q: 9. Is this the Generation II scope?

A: It is the second generation.

Q: 10. Will this [safely] fit a 130mm (5.1") reflector tube?

A: This Cradle Assembly from Explore Scientific is a replacement for the cradle assembly included with the white 127mm telescope OTA but can also be used with other telescopes that would snugly fit its 5" inside diameter.