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Siebert Optics 1.75x Barlow (BAR2-1.75T)
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Accessory
Siebert Optics 1.75x Barlow (BAR2-1.75T)
siebertoptics.com/.../SiebertOptics-barlows.html
| Type | Focal modifier / field corrector |
|---|---|
| Users | 1 |
| Images | 1 |
Community notes
This Barlow is designed primarily for viewing uses. When used in the light train for astrophotography, the usual ~55mm backfocus to the imager causes an increase in magnification of the specified/designed factor up to 1.9x-2.0x. This is the 'T' version of Siebert Optics' range Barlows. A 'C' version of it would be designed for that 55mm backfocus and provide the designed magnification.