3nm SHO Filters with test report from Altair Astro

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altair_astro
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3nm SHO Filters with test report from Altair Astro

#1

Post by altair_astro »


Hi Guys, haven't posted in a while here! Hope you're all hale, healthy and enjoying the skies.

We have new product to mention:

Altair 3nm SHO filters in 2" size for mono CMOS or CCD imaging

Available individually or as an SHO bundle.

Features are:
3nm FWHW , centred on the CWL at F4.8 or slower
90% transmission at CWL
0.01% transmission off-band visual wavelengths
UVIR blocking
Anti Halo coating. We've never seen a halo with these filters in Beta and mainstream, even on Vega.*
Test report - individual for each filter.

You can see the results with the Altair 3nm filter for yourself in our Facebook group.

You can order from:
USA: Land Sea and Sky in Texas
France: Pierro Astro
Germany: APM Telescopes
Worldwide: Altair Astro (put it in the shopping basket, choose country for total price)
F200SHO3NM-SET-BOX3D-800w.jpg
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F2003NM 3nm Narrowband 2inch Filter Test Comparison Hypercam 26M F4.8.PNG
Attachments
F2003NM 3nm Narrowband 2inch Filter Test Vega 30s Hypercam 26M F4.8.PNG
Last edited by altair_astro on Fri Aug 05, 2022 6:22 pm, edited 2 times in total.
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Re: 3nm SHO Filters with test report from Altair Astro

#2

Post by chris_g »


altair_astro wrote: Fri Aug 05, 2022 4:04 pm * I have no idea how to attach an image to this but I have pics to share!
Hi,

Switch to the full editor then scroll down until you see options and attachments, it's below the save, preview and submit buttons.

Clear Skies!
Chris
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Untitled.jpg
Backyard 1 : Bortle 7 32.40874, -93.66932
Backyard 2 : Bottle 5 31.12907, -92.06221
Mounts : SW EQ6-R Pro, SW AZ-EQ5 Pro
Scopes : EvoStar ED80 (F/7.5, F/6.3) Zenith Star Z73 (F/5.9), C8-A XLT (F/10, F/6.3)
Guide Scopes : Orion 60mm Multi-Use, WO 32mm UniGuide, ZWO OAG
Finder Scopes : Baader Sky Surfer III Red Dot, SW 8x50mm Viewfinder
Eyepieces : Plossl Yes, Hyperion Modular 1.25/2.0" EP Set
Cameras : EOS 600D (Stock), 6D (Ha modified), ZWO ASI 120mm mini, ASI 290 mini, Samsung Galaxy 22 Ultra, 7mm, F/1.8,
Filters: L-Pro Canon EOS C, L-eNhance, L-Pro, Optolong Ha 7mm, Optolong Oiii 6.5mm, Optolong Sii 6.5mm, ES H-Beta
Session Control: Mini PC/Win10 Pro, APT 3.9, PHD2 2.6.10
Processing: DSS 4.2.6, Adobe PS CC, Astronomy Tools Action Set, Star Spikes Pro
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Re: 3nm SHO Filters with test report from Altair Astro

#3

Post by altair_astro »


thanks Chris I edited the post and found a way to use BBCode as full editor isn't available when editing.
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yobbo89
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Re: 3nm SHO Filters with test report from Altair Astro

#4

Post by yobbo89 »


very nice, will you be doing a 5nm ha filter ?
scopes :gso/bintel f4 12"truss tube, bresser messier ar127s /skywatcher 10'' dob,meade 12'' f10 lx200 sct
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .

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Re: 3nm SHO Filters with test report from Altair Astro

#5

Post by altair_astro »


Hi there, @yobbo89 we already do a 7nm filter, here's the set: https://www.altairastro.com/altair-2-pr ... -310-p.asp

We could do a 5nm but it wouldn't be much cheaper than the 3nm.

Is there a reason you need 5nm specifically? Maybe a faster F-Ratio than F4.8?
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