SII narrowband filters isolate the sulphur-II emission line at 672.4nm, making them ideal for astrophotography of emission nebulae and complex ionised regions.
Commonly used as part of SHO (Hubble palette) imaging, SII filters add depth and contrast to nebular structures while effectively suppressing artificial light pollution and atmospheric skyglow.
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Really excellent little lens, superb for widefields and it all fits together perfectly with my astro cameras. Thumbs up to Dark Clear Skies also. Simon
Excellent shop ordered the seestar s30 pro on Wednesday and received it on Saturday even though it was the Easter holiday. Would definitely shop here again.
These glassed seem rather small for an adult to wear.
Very quick delivery of high quality accredited solar glasses
I payed for 1-3 days delivery and it wasnt shipped for 3 weeks, seller ingored all of attemps to contact, still not delivered
I am so pleased with this scope as the stars right into the corners of the frame are so sharp and clear. I compared this with a Redcat 51 and the Svbony is far better. I sed the scope with a ZWO 2600MC Pro. The image attached has been reduced in resolution but you can see the full image on my Astrobin page https://www.astrobin.com/el0b7l/ . Paul at Dark Clear Skies was very helpful in enabling me to return a defective scope from the "First" which were know to have a few problems. The one I have now is just about perfect
A few of us viewed the partial eclipse today with our solar viewing glasses and nobody has reported any sight problems, so they seem to do their job effectively. Ordering was straightforward and delivery was quick, so absolutely no complaints from me!
Really excellent little lens, superb for widefields and it all fits together perfectly with my astro cameras. Thumbs up to Dark Clear Skies also. Simon
Excellent service ordered the seestar s30 pro on the Wednesday and received it on the Saturday even though it was the Easter holiday. Would definitely shop here again.
Excellent shop ordered the seestar s30 pro on Wednesday and received it on Saturday even though it was the Easter holiday. Would definitely shop here again.
