Alpine Astronomical assembled all three of their very thin rings in this Baader M48 Aluminum Fine-Adjustment Ring Set to give you all the options you might need to get the perfect eyepiece projection setup. The set includes one each of their 0.3, 0.5, and 1mm rings.
Use the 0.3mm Alpine Astronomical Baader M48 Aluminum Fine-Adjustment Ring to fine-tune your rig during eyepiece projection astrophotography techniques.
The M48 thread size fits most 2" eyepieces and accessories and is used with the large-format T-2 gear that is required to cover today's larger imaging sensors and prevent vignetting. This extremely thin spacer ring is machined out of aluminum to be strong yet durable and is made without threads for easy installation and removal. The ring also offers the added benefit of preventing binding between two threaded parts to make disassembly faster and easier without damaging your gear. The 0.3mm thickness equates to roughly 2/5 turn of rotation. Alpine offers three sizes of the spacer ring, and each is color coded for easy identification—this size is colored black.
Use the 0.5mm Alpine Astronomical Baader M48 Aluminum Fine-Adjustment Ring to fine-tune your rig during eyepiece projection astrophotography techniques.
The M48 thread size fits most 2" eyepieces and accessories and is used with the large-format T-2 gear that is required to cover today's larger imaging sensors and prevent vignetting. This extremely thin spacer ring is machined out of aluminum to be strong yet durable and is made without threads for easy installation and removal. The ring also offers the added benefit of preventing binding between two threaded parts to make disassembly faster and easier without damaging your gear. The 0.5mm thickness equates to roughly 2/3 turn of rotation. Alpine offers three sizes of the spacer ring, and each is color coded for easy identification—this size is colored red.
Use the 1mm Alpine Astronomical Baader M48 Aluminum Fine-Adjustment Ring to fine-tune your rig during eyepiece projection astrophotography techniques.
The M48 thread size fits most 2" eyepieces and accessories and is used with the large-format T-2 gear that is required to cover today's larger imaging sensors and prevent vignetting. This extremely thin spacer ring is machined out of aluminum to be strong yet durable and is made without threads for easy installation and removal. The ring also offers the added benefit of preventing binding between two threaded parts to make disassembly faster and easier without damaging your gear. The 1mm thickness equates to roughly 1 1/3 turn of rotation. Alpine offers three sizes of the spacer ring, and each is color coded for easy identification—this size is colored gold.