Antlia ALP-T Dual Narrowband H-a, H-b, SII & OIII (5nm) 2 Filter Set for f/3.6 & Slo...
Ships by Next Business Day
Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.
US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.
International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.
Please see the links above for a detailed description of each individual filter included in this set.
Set of two 2" mounted filters (M48x0.75 thread)
Antlia ALP-T Dual Band 5nm Ha&OIII filter: Dual band filter with a very narrow passband of 5nm in OIII and H-alpha to achieve a higher signal-to-noise ratio. The resulting contrast improvement for OSC is impressive.
Antlia ALP-T Dual Band 5nm SII&Hb filter: Dual band filter with a very narrow pass band of 5nm H-beta and S-II. This filter is ideal for increasing contrast of nebulae that emit in the sulfur and H-beta range using OSC. It provides additional feature separation and isolation in Hb areas.
The advanced multi-coatings on Antlia ALP-T dual band filters effectively isolates the red, Ha line, blue-green, OIII line, deep red SII and the blue H-beta lines from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that both the ALP-T dual band 5nm Ha&OIII and SII&Hb filter creates a superior signal-to-noise ratio and better contrast in your OSC images.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
Please see the links above for a detailed description of each individual filter included in this set.
Set of two 2" mounted filters (M48x0.75 thread)
Antlia ALP-T Dual Band 5nm Ha&OIII filter: Dual band filter with a very narrow passband of 5nm in OIII and H-alpha to achieve a higher signal-to-noise ratio. The resulting contrast improvement for OSC is impressive.
Antlia ALP-T Dual Band 5nm SII&Hb filter: Dual band filter with a very narrow pass band of 5nm H-beta and S-II. This filter is ideal for increasing contrast of nebulae that emit in the sulfur and H-beta range using OSC. It provides additional feature separation and isolation in Hb areas.
The advanced multi-coatings on Antlia ALP-T dual band filters effectively isolates the red, Ha line, blue-green, OIII line, deep red SII and the blue H-beta lines from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that both the ALP-T dual band 5nm Ha&OIII and SII&Hb filter creates a superior signal-to-noise ratio and better contrast in your OSC images.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
Antlia ALP-T Dual Narrowband H-a, H-b, SII & OIII (5nm) 2 Filter Set for f/3.6 & Slower Telescopes - 2" Mounted