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Bahtinov Masks in various sizes and types.

Type	Mask pattern diameter (Aperture)	Focal Length	Outer circle diameter	Features	Designed for
Type 102/500	90mm	500mm	122mm	Adjustable bolts 100-135mm	Generic
Type 127/1500	120mm	1500mm	148mm	Adjustable bolts 130-160mm	Generic
Type 130/900	125mm	900mm	165mm	Adjustable bolts 150mm to 185mm	Generic
Type 150/700	125mm	750mm	180mm	Adjustable bolts 150mm to 185mm	Generic
Type 150/1100	140mm	1000-1200mm	170mm	Adjustable bolts 160-190mm	Generic
Type 200/1100	195mm	1000-1200mm	230mm	Adjustable bolts 220-250mm	Generic
Type 200/2000	200mm			Adjustable bolts	Generic
SVBony 30mm Guide Scope	30mm	120mm		45.5mm inner diameter
TPO 180 Ultrawide	40mm	180mm		53mm inner diameter
ZWO 60mm Guide Scope	60mm	280mm		66mm inner diameter	ZWO 60mm Guide Scope
SkyWatcher Evoguide 50 ED	50mm	242mm		61mm inner diameter	SkyWatcher EvoGuide 50ED
SkyWatcher EvoStar 72 ED	72mm	420mm		89mm inner diameter	SkyWatcher EvoStar 72ED
SkyWatcher 80/400 Esprit	80mm	400mm		125mm inner diameter	SkyWatcher 80 ED Esprit (400mm focal length)
Celestron 80mm Guide Scope	80mm	600mm		114mm inner diameter	Celstron 80mm guide scope
SkyWatcher 800/600 ED	80mm	600mm		115.5mm inner diameter	SkyWatcher 80 ED (600mm focal length)
SkyWatcher 100ED	90mm	550mm	135mm	With Adjustable bolts 100-140mm	Skywatcher 100ED with or without dew shield.
Sharpstar Z4 100mm	100mm	550mm		132mm inside diameter	Sharpstar Z4 100/550
Explore Scientific 102mm ED	102mm	714mm		154mm inside diameter	For Explore Scientific 102mm ED with Dew Shield
SkyWatcher 120ED	120mm	900mm		144mm inside diameter
SkyWatcher StarTravel 120	120mm	600mm		142mm inside diameter
NexStar 6SE	150mm	1500mm	174mm	60mm central hole	Celestron NexStar 6SE
Celestron 8 SC - Tribahtinov	200mm	2000mm	220mm	73mm central hole	Tribahtinov for Celestron NexStar 8SE or 8 EdgeHD
Meade LX90 8 SCT	200mm	2000mm	220mm	73mm central hole	Meade LX90 8” SCT
Meade LX90 8 ACF	200mm	2000mm	220mm	76mm central hole	Meade LC90 8” ACF
Celestron Edge HD 9.25	235mm	2350mm	250mm		Celestron Edge HD 9.25
Meade LX90 10 ACF	254mm	2540mm	295mm		Meade LX90 10 inch.
Meade 10 SN	250mm	1000mm	295mm	77mm central hole	Meade 10 Schmidt-Newt
Intes Alter M1008	245mm	2450mm			Intes Alter M1008
Note: DSLR sizes are by physical dimensions, these are not referring to standard filter sizes. Check the inner diameter vs the outer dimension of the front of your lens.
DSLR 80mm	76mm	200mm		80mm inner diameter	DSLR lens
DSLR 95mm	90mm	400mm		95mm inner diameter	DSLR lens Sigma 150-500 F5-6.3 APO DG OS
DSLR 100mm	95mm	200mm		100mm inner diameter	DSLR lens
DSLR 106mm	95mm	200mm		106mm inner diameter	DSLR lens
DSLR 137mm	115mm	300mm		137mm inner diameter	DSLR lens

Postage to Australia only.

Note that Bahtinov masks are quite forgiving and don't require an exact match on focal length, as long as the mask physically fits on the front of the telescope you should be alright.

However, if you want a mask for a different pattern, size or focal length let me know and I'll see if I can help. Due to the print bed size of my printer, I can't make objects to suit scopes larger than 11 inches.

If you want the discount to apply for buying several masks, make sure you add all masks to your cart first, then finalise the purchase.

Sigma 150-500 F5-6.3 APO DG OS