Blue Fireball Large 3.28" Celestron SCT Female Thread to 2" Small SCT Male Thread Adapter
This item is discontinued by the manufacturer and is no longer available.
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IMPORTANT NOTE:
Please note that the small male SCT thread length is 7mm. While this will be adequate for most SCT diagonals, please make sure that the female SCT thread on your diagonal does not exceed 7mm. A few diagonals, most notably William Optics' SCT diagonals, have a female thread length longer than 7mm. Such diagonals will not lock on this adapter without the use of an additional o-ring such as the item at this link (not included).
Description/Uses:
- Adapter with Celestron's large 3.28" female SCT threads on one side and a standard 2" male small SCT thread on the other side
- Celestron's 9.25" EdgeHD and all 11" and 14" SCT/EdgeHD telescopes come with a similar adapter but we are offering this for those who might need a replacement
- Also features a short M48 female thread inside the large female SCT thread. This can be used to attach 2" filters inside the adapter on the telescope side.
Features:
- Precision machined, black anodized aluminum
- Large knurled grip pattern on the outside
Specifications:
- Weight = 2.6oz
- Total length = 17.5mm (0.69")
- Optical length (Total length - small male SCT thread length) = 10.5mm (0.41")
- Large female thread specification = 3.28"-16TPI
- Length of large female SCT thread (including unthreaded undercut) = 7mm (0.28")
- Small male SCT thread specification = 2"-24TPI
- Length of male SCT thread (including unthreaded undercut) = 7mm (0.28")
- M48 filter thread specification = M48x0.75
- Length of female M48 thread = 2mm (0.08")
- Clear aperture = 47mm (1.85")
- Maximum outside diameter = 92mm (3.62")
Other Information
- Country of Manufacture: China
IMPORTANT NOTE:
Please note that the small male SCT thread length is 7mm. While this will be adequate for most SCT diagonals, please make sure that the female SCT thread on your diagonal does not exceed 7mm. A few diagonals, most notably William Optics' SCT diagonals, have a female thread length longer than 7mm. Such diagonals will not lock on this adapter without the use of an additional o-ring such as the item at this link (not included).
Description/Uses:
- Adapter with Celestron's large 3.28" female SCT threads on one side and a standard 2" male small SCT thread on the other side
- Celestron's 9.25" EdgeHD and all 11" and 14" SCT/EdgeHD telescopes come with a similar adapter but we are offering this for those who might need a replacement
- Also features a short M48 female thread inside the large female SCT thread. This can be used to attach 2" filters inside the adapter on the telescope side.
Features:
- Precision machined, black anodized aluminum
- Large knurled grip pattern on the outside
Specifications:
- Weight = 2.6oz
- Total length = 17.5mm (0.69")
- Optical length (Total length - small male SCT thread length) = 10.5mm (0.41")
- Large female thread specification = 3.28"-16TPI
- Length of large female SCT thread (including unthreaded undercut) = 7mm (0.28")
- Small male SCT thread specification = 2"-24TPI
- Length of male SCT thread (including unthreaded undercut) = 7mm (0.28")
- M48 filter thread specification = M48x0.75
- Length of female M48 thread = 2mm (0.08")
- Clear aperture = 47mm (1.85")
- Maximum outside diameter = 92mm (3.62")
IMPORTANT NOTE:
Please note that the small male SCT thread length is 7mm. While this will be adequate for most SCT diagonals, please make sure that the female SCT thread on your diagonal does not exceed 7mm. A few diagonals, most notably William Optics' SCT diagonals, have a female thread length longer than 7mm. Such diagonals will not lock on this adapter without the use of an additional o-ring such as the item at this link (not included).
Description/Uses:
- Adapter with Celestron's large 3.28" female SCT threads on one side and a standard 2" male small SCT thread on the other side
- Celestron's 9.25" EdgeHD and all 11" and 14" SCT/EdgeHD telescopes come with a similar adapter but we are offering this for those who might need a replacement
- Also features a short M48 female thread inside the large female SCT thread. This can be used to attach 2" filters inside the adapter on the telescope side.
Features:
- Precision machined, black anodized aluminum
- Large knurled grip pattern on the outside
Specifications:
- Weight = 2.6oz
- Total length = 17.5mm (0.69")
- Optical length (Total length - small male SCT thread length) = 10.5mm (0.41")
- Large female thread specification = 3.28"-16TPI
- Length of large female SCT thread (including unthreaded undercut) = 7mm (0.28")
- Small male SCT thread specification = 2"-24TPI
- Length of male SCT thread (including unthreaded undercut) = 7mm (0.28")
- M48 filter thread specification = M48x0.75
- Length of female M48 thread = 2mm (0.08")
- Clear aperture = 47mm (1.85")
- Maximum outside diameter = 92mm (3.62")
Other Information
- Country of Manufacture: China