Electric Constellations Bahtinov Mask list
When all three rays meet, the star is in focus
See the article on Bahtinov Masks here.
The main horizontal spike is your main tool for focusing. As you change the focus, this spike will move up or down (or left or right, depending on orientation) to the other two diagonal spikes. You want to get the central spike exactly between the two diagonal spikes. Do that, and you’ll have the focus just right. Then, remove the mask and take the picture.
The following list of over fifty various Bahtinov masks is for specific telescopes or cameras. Choose yours, then click on the image to get it.
Gerd Neumann Jr. Bahtinov mask for an M77 lens.
This 77 mm Mask is for use with camera lenses. It is mounted to a filter holder with an M77 thread and screws directly into the lens.
Gerd Neumann Jr. Bahtinov mask for an M62 lens.
This small 62 mm Mask is for use with camera lenses. It is mounted to a filter holder with an M62 thread and screws directly into the lens.
TS Optics Bahtinov Mask for 150-200mm aperture telescopes
The Bahtinov masks from TS Optics are available for various telescope apertures.
TS Optics Bahtinov Mask, 125-180mm aperture telescopes
The Bahtinov masks from TS Optics are available for other telescope apertures.
TS Optics Bahtinov Mask, 195-240mm aperture telescopes
The Bahtinov masks from TS Optics are available for various telescope apertures.
Bahtinov focus Mask for an M58 camera lens
This small 58 mm Mask is for use with camera lenses. It is mounted to a filter holder with an M58 thread and screws directly into the lens.
Bahtinov focus Mask 80 for 86mm to 105mm OTAs
A Bahtinov mask should be calculated separately for each aperture ratio. However, experience shows that one mask can be used very effectively for an entire aperture range.
Bahtinov focus Mask 180, for 185mm to 210mm aperture telescopes
A Bahtinov mask should be calculated separately for each aperture ratio. However, experience shows that one mask can be used very effectively for an entire aperture range.
Focusing Mask Bahtinov ZWO Seestar S50
The ZWO Seestar S50 is a compact smart telescope with a 50mm aperture. It has GoTo, autofocus, and live stacking – watch the image come to life before your eyes.
Focusing Bahtinov Mask for the Celestron SC925
The mask is attached to the front of the tube or lens. Thanks to its many opening slits, the Bahtinov mask can also be used with relatively dim stars.
Focusing Bahtinov Mask Celestron SC11
Thanks to its many opening slits, the Bahtinov mask can also be used with relatively dim stars. This is an advantage over the classic Scheiner mask.
Focusing Bahtinov Mask Samyang 135mm F2
A Bahtinov mask is used with the Samyang 135mm F2 lens to achieve precise and accurate focusing, particularly important for astrophotography.
Focusing Bahtinov Mask William Optics 50mm Uniguide
The diffraction pattern is not great because the slots and slats are not fine enough for the small aperture, but it is good enough to get you focused enough for guiding to work well.
Focusing Bahtinov Mask acrylic 60-90mm
This Bahtinov mask is used with 60 to 90mm instruments to achieve precise and accurate focusing. This inexpensive mask can be used very effectively over this entire aperture range..
Focusing Bahtinov Mask for 58mm DSLR Lenses
This product is available for DSLR lens sizes up to 105mm aperture.
Focusing Bahtinov Mask for the Skywatcher Skymax 127/1500
This Bahtinov mask is perfect for the Maksutov telescope MC 127/1500 SkyMax-127 AZ-GTi GoTo WiFi.
Focusing acrylic Bahtinov Mask for 100-140mm apertures
This Bahtinov mask is used with 100 to 140mm instruments to achieve precise and accurate focusing. This inexpensive mask can be used very effectively over this entire aperture range.
Focusing acrylic Bahtinov Mask for 80-110mm apertures
This Bahtinov mask is used with 80 to 110mm instruments to achieve precise and accurate focusing. This inexpensive mask can be used very effectively over this entire aperture range.
Focusing Bahtinov Mask for the Skywatcher N 200/1000
This Bahtinov mask is ideal for the Skywatcher N 200/1000 Explorer telescope range. With a 200mm aperture, this telescope opens up new details in deep sky observing for the observer as compared to smaller telescopes.
Focusing Bahtinov Mask for the Skywatcher N 150/750
This Bahtinov mask is ideal for the Skywatcher N 150/750 Explorer telescope range. This versatile Newtonian reflecting telescope provides both beginners and more experienced amateur astronomers plenty of light and high stability for a very modest price.
Focusing acrylic Bahtinov Mask for 230-290mm apertures
This Bahtinov mask is used with 230 to 290mm instruments to achieve precise and accurate focusing. This inexpensive mask can be used very effectively over this entire aperture range.
Focusing Bahtinov Mask for the Celestron SCT 203 8-inch
This Bahtinov mask is ideal for the Celestron SCT 203 8-inch. Despite the long focal length of these telescopes, the OTA itself has a very short length, making the system a compact telescope that is extremely easy to transport.
Focusing Bahtinov Mask for 55mm Objectives
This Bahtinov mask is designed for use with 55mm camera lenses.
Focusing Bahtinov Mask for 62mm Objectives
This Bahtinov mask is designed for use with 55mm camera lenses.
Focusing Bahtinov Mask for 67mm Objectives
This Bahtinov mask is designed for use with 67mm camera lenses.
Focusing Bahtinov Mask for 95mm Objectives
This Bahtinov mask is designed for use with 95mm camera lenses.
Focusing acrylic Bahtinov Mask for 200-260mm apertures
This Bahtinov mask is used with 200 to 260mm instruments to achieve precise and accurate focusing. This inexpensive mask can be used very effectively over this entire aperture range.
Focusing Bahtinov Mask for 82mm Objectives
This Bahtinov mask is designed for use with 82mm camera lenses.
Focusing acrylic Bahtinov Mask for 120-160mm apertures
This Bahtinov mask is used with 120 to 160mm instruments to achieve precise and accurate focusing. This inexpensive mask can be used very effectively over this entire aperture range.
Focusing Bahtinov Mask for the Skywatcher 130PDS
This Bahtinov mask is ideal for the Skywatcher 130PDS. Despite the long focal length of these telescopes, the OTA itself has a very short length, making the system a compact telescope that is extremely easy to transport.
Focusing Bahtinov Mask for the Skywatcher MC 127/1500
This Bahtinov mask is perfect for the Maksutov Skywatcher MC 127/1500. This instrument is a very compact and powerful telescope for planetary and deep sky observations.
Focusing acrylic Bahtinov Mask for 180-220mm apertures
This Bahtinov mask is used with 180 to 220mm instruments to achieve precise and accurate focusing. This inexpensive mask can be used very effectively over this entire aperture range.
Focusing Bahtinov Mask for the Skywatcher MC 150/1800
This Bahtinov mask is perfect for the Maksutov Skywatcher MC 150/1800 SkyMax NEQ-5 Pro SynScan GoTo. This high-quality Maksutov telescope provides an ideal basis for both planetary and DSO observing.
Focusing acrylic Bahtinov Mask for 292-368mm apertures
This Bahtinov mask is used with 292 to 368mm instruments to achieve precise and accurate focusing. This mask can be used very effectively over this entire large aperture range.
Focusing acrylic Bahtinov Mask for 368-444mm apertures
This Bahtinov mask is used with 368 to 444mm instruments to achieve precise and accurate focusing. This mask can be used very effectively over this entire large aperture range.
Focusing Bahtinov Mask for 72mm Objectives
This Bahtinov mask is designed for use with 72mm camera lenses.
Focusing Bahtinov Mask for the Skywatcher Skymax 180/2700
This Bahtinov mask is perfect for the Skywatcher MC 180/2700 SkyMax 180 EQ5 Pro SynScan GoTo. This high-quality Maksutov telescope provides an ideal basis for both planetary and DSO observing.
Focusing Bahtinov Mask for 105mm Objectives
This Bahtinov mask is designed for use with 105mm camera lenses.
Focusing acrylic Bahtinov Mask for 63-139mm apertures
This Bahtinov mask is used with 63 to 139mm instruments to achieve precise and accurate focusing. This mask can be used very effectively over this entire large aperture range.
Focusing acrylic Bahtinov Mask for 139-216mm apertures
This Bahtinov mask is used with 139 to 216mm instruments to achieve precise and accurate focusing. This mask can be used very effectively over this entire large aperture range.
Focusing Bahtinov Mask for the Celestron SC 150/1500 StarSense Explorer DX 6 AZ
The StarSense Explorer telescope uses your smartphone to analyze the night sky and calculate its position in real time.
Focusing acrylic Bahtinov Mask for 216-292mm apertures
This Bahtinov mask is used with 216 to 292mm instruments to achieve precise and accurate focusing. This mask can be used very effectively over this entire large aperture range.
Focusing Bahtinov Mask for the Celestron SC 279/2800 EdgeHD 1100 CPC Deluxe GoTo
Celestron's EdgeHD telescopes ( "Edge High Definition") are true astrographs. This optical system delivers distortion-free, sharp images right to the edge of the visual field.
Focusing Bahtinov Mask for 86mm Objectives
This Bahtinov mask is designed for use with 86mm camera lenses.
Focusing Bahtinov Mask for 185-210mm OTAs
A Bahtinov mask should be calculated separately for each aperture ratio. However, experience shows that one mask can be used very effectively for an entire aperture range.
Focusing Bahtinov Mask for 212-252mm OTAs
A Bahtinov mask should be calculated separately for each aperture ratio. However, experience shows that one mask can be used very effectively for an entire aperture range.
Focusing Bahtinov Mask for 270-305mm OTAs
A Bahtinov mask should be calculated separately for each aperture ratio. However, experience shows that one mask can be used very effectively for an entire aperture range.
Focusing Bahtinov Mask for the Celestron SC 203/2032 EdgeHD 800 AVX GoTo
Celestron's EdgeHD telescopes ( "Edge High Definition") are true astrographs. This optical system delivers distortion-free, sharp images right to the edge of the visual field.
Focusing Bahtinov Mask for the Skywatcher N 150/600 Quattro-150P OTA
The Quattro range means extraordinarily 'fast' optics to benefit your astrophotography. Quattro telescopes have been designed and built specifically with astrophotography in mind. The 'fast' f4 aperture ratio allows you to capture extensive detail in your astrophotos - even when using short exposure times.
Focusing Bahtinov Mask for the Meade ETX-80
Over the years, ETX Series telescopes have provided novice astronomers quality, value and performance, with each new model bringing enhancements and improvements. The ETX-80 Observer continues that legacy.
Focusing Bahtinov Mask for the Meade ED-80
Over the years, ETX Series telescopes have provided novice astronomers quality, value and performance, with each new model bringing enhancements and improvements. The ED-80 Observer continues that legacy.
Focusing Bahtinov Mask for the 10" Schmidt-Cassegrain telescopes 280mm-298mm
Unlike a simple Hartman or Bahtinov mask, the Astrozap focusing cap is a multi-purpose tool which allows for quick 'shutter-like' operation. Just turn the wheel to the open position for focusing, and then turn it again to the closed position to keep the dust out, or to image dark frames with your ccd or dslr camera.
Challenge the standard model—explore the cosmos through the Electric Universe Theory. These Electric Constellations books contain full-color, data-rich investigations of four constellations each. They're not a beginner's star guide—they're a serious work for independent thinkers, astronomers, and scientifically literate readers seeking to understand the Universe beyond conventional gravity-based interpretations.
Each constellation is examined in detail, with attention to its Bayer-designated stars, mythological origins, meteor showers, and bordering constellations. In-depth profiles of deep-sky objects—including galaxies, planetary nebulae, and star clusters—are paired with high-resolution imagery from the Webb and Hubble space telescopes, delivering both scientific clarity and visual impact.
Central to this series is the Electric Universe (EU) model, which proposes that electromagnetic forces—not gravity alone—govern much of the structure and behavior of the cosmos. Rather than treating this as speculative fringe, the book frames the EU model as an evidence-based, plasma-physics-informed alternative to the standard cosmological narrative.
Inside each volume:
- Comprehensive coverage of four distinct constellations
- Analyses of deep-sky objects in the EU context
- Original commentary on plasma discharge features and Z-pinch configurations
- Mythological and historical context without romantic embellishment
Written for readers who demand more than rote repetition of gravitational dogma, Electric Constellations opens a new observational and theoretical frontier—where stars light by electrical currents, not fusion, and where structure emerges from plasma dynamics, not dark matter.
Whether you are an amateur astronomer, electrical engineer, or astrophysicist curious about alternative models, these books deliver a rigorous and visually stunning exploration of the night sky—illuminated by a very different current.
