ANTLIA 3nm PRO ULTRA NARROWBAND SET Ha + OIII + SII
Specifications
| Passing band | 3 nm (FWHM) |
|---|---|
| Glass thickness | 2.0 mm ±0.05 (3.0 mm for 50 mm round & 50 x 50 mm square) |
| Optical flatness | 1/4 λ (wavefront) |
| Bandpass transmission | 85% - 90% |
| Off-band transmission | <0.001% (OD5) @ 300-1000 nm |
| Coating | Double-sided multilayer nano-coating |
| Surface quality | 60/40 (in accordance with US military watch MIL-O-13830) |
| Parallelism |
30"
|
| Glass type |
Schott monolithic optical substrate (non glued)
|
| Filter options |
Mounted 1.25", 2", Unmounted 31 mm, 36 mm, 50 mm round, 50 x 50 mm square
|
Gallery
Tarantula Nebula - QHY268M with Antlia 3nm Pro H-alpha & OIII filters by Caleb Kam.
Customer Reviews
If the Bortle Scale allowed for a 2 digit rating then my light soaked backyard would be a 20, I can fill in the SMH crossword puzzle at midnight, so narrowband is my only hope for imaging. I used the Antlia 4.5 nm SHO filters for 12 months and I was happy with the results until I upgraded to the 3nm ultras. It's only 1.5nm reduction in bandwidth but the difference has been simply amazing. I'm going to recapture a lot of my deep sky targets with the 3nm filters, and when you take them to a dark sky site you come home with just the DSO photons you want. Here's the Horsehead Nebula processed as HSO and the SMC processed as SHO with RGB stars using the 3nm ultra narrowband filters and Antlia LRGB filters.
I recently used these filters to capture this image of NGC6188. This was my first narrowband project. Easy installation of the filters into my 7 slot Zwo wheel. I used an Askar 65PHQ with a ZWO ASI2600mm camera. About 20 hrs of Ha, 10 hours each of O3 and S2, and much of it captured around full moon. Processed and edited entirely in Pixinsight. I am very happy with the quality of the results.
This is The Running Man Nebula and The Orion Nebula from my back yard in West Hobar Bortle 6.
These filters are just freaking awesome - I loose myself when watching theses images come in
The Running Man nebula and M42 The Orion Nebula from West Hobart 29-30 Nov.
Telescope SharpStar 94 EDPH
Camera ZWOASI 1600mm Pro
Prima Luce Eagle 3
Celestron CGX mount
Filters Antlia 3nm ultra narrow band 1.25” set
These filters are just awesome to use
Processed in Pixinsight
Ha -30x180s subs
Oiii - 30x180s subs
Siri- 30x 180s subs
Great service from Testar as usual
Filters were extremely well packaged.
All I can say is wow, the difference from my original NB filter set is outstanding.
This is NGC 2070 from my back yard in inner city Hobart Bortle 7
Shot with a ZWO ASI 1600 MM Pro
Best thing I have ever done
In short, in my view these are the best value narrowband filters money can buy. I compared the Ha against a popular entry-level 7nm Ha filter and was very impressed with the greater clarity and contrast through the Antlia 3.5nm. These filters really allow you to get the best out of your mono camera, not to mention opening up the possibilities of shooting in less than ideal light conditions, such as a full Moon. There is some haloing around bright stars like Alnitak, but Antlia are very upfront about this and honestly it is better than I encountered with another Ha filter, so I have zero regrets or complaints.
The filters come very well packaged and protected, and you get the sense that they really care about their product and are not cutting corners, despite the very attractive pricing for these filters. I am so happy with them that I have since replaced my LRGB filters with a set of Antlias as well. If you're wanting to get into narrowband astrophotography and are hoping for a set of filters that will set you up for a long time without breaking the bank, seriously consider the 3.5nm Antlia set.
A note for users of the 294 sensor cameras (ASI294MM / QHY294M) - this sensor reacts weirdly when taking flats with Ha and S filters - do some quick googling and you'll confirm that it's your sensor, not the Antlia filters as it happens with all Ha and S narrowband filters. They do calibrate out just fine, you just need to be careful and precise when taking your flats.
Here are my first two narrowband images shot with these filters, NGC3342 and IC4628. Both shot on the ASI294MM-Pro from my Bortle 5 back yard in Eltham, Melbourne.
