#Optolong 2โ L- eXtreme Filter (BRAND NEW) - $330 AUD
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have to check with parents first 
let me know how you go, i can provide any more info if u need.
Alright thx 
How thin is the bandpass ?
Optolong L-eXtreme dual-band light pollution filter for astrophotography of emission nebulae with DSLR and CMOS/CCD cameras.
7nm
if u have an f/4 system or faster i wouldnt recommend
hm i can stop down to f4
what is your setup you were thinking of using it for?
https://youtu.be/lMt63OaWfXQ?si=b6hP_RwBbrFk9zFN heres a video on the l extreme on an f/4 system vs the antlia filter that is relatively new
Raw frames from the test of the Antlia filter vs the L-eXtreme:
https://drive.google.com/drive/folders/1Q3WDhDHkr0g-Gixkpu-b8R5ncUa3qfan?usp=sharing
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he shows the difference of transmission in a sub
roki f2 buti shoot at f2.8
yeah i wouldnt recommend it,
depends on your budget tho
The new Antlia ALP-T Golden Dual Band filter is specifically designed for astrophotography with colour DSLR, CMOS or CCD cameras in areas with heavy light pollution. Its two 5nm passing bands are exceptional at isolating nebulae emissions in H-Alpha and OIII. The filter has excellent halo suppression, making bright stars pain-free.
this has been designed for f/4 systems
ill look into it more, ill let u know within like 2-3 days if thats all good
yeah man no dramas.
yeap no worries man!