Telescope Field of View Calculator Telescope Field of View Calculator Designation Value Required Data Telescope Focal Length MM Select Eyepiece Celestron – Micro Guide – 12.5 mmCelestron – Plossl – 6.3 mmCelestron – Plossl – 7.5 mmCelestron – Plossl – 10 mmCelestron – Plossl – 12.5 mmCelestron – Plossl – 17 mmCelestron – Plossl – 20 mmCelestron – Plossl – 26 mmCelestron – Plossl – 32 mmCelestron – Plossl – 40 mmMeade – Plossl – 5 mmMeade – Plossl – 6.7 mmMeade – Plossl – 9.5 mmMeade – Plossl – 16 mmMeade – Plossl – 25 mmMeade – Plossl – 40 mmMeade – Super Plossl – 6.4 mmMeade – Super Plossl – 9.7 mmMeade – Super Plossl – 12.4 mmMeade – Super Plossl – 15 mmMeade – Super Plossl – 20 mmMeade – Super Plossl – 26 mmMeade – Super Plossl – 32 mmMeade – Super Plossl – 40 mmMeade – Super Plossl – 56 mmMeade – Ultra Wide Angle – 4.7 mmMeade – Ultra Wide Angle – 6.7 mmMeade – Ultra Wide Angle – 8.8 mmMeade – Ultra Wide Angle – 14 mmPentax – SMC XL – 5.2 mmPentax – SMC XL – 7 mmPentax – SMC XL – 10.5 mmPentax – SMC XL – 14 mmPentax – SMC XL – 21 mmPentax – SMC XL – 28 mmPentax – SMC XL – 40 mmTakahashi – LE – 5.5 mmTakahashi – LE – 7.5 mmTakahashi – LE – 12.5 mmTakahashi – LE – 18 mmTakahashi – LE – 24 mmTakahashi – LE – 30 mmTakahashi – LE – 50 mmTelevue – Nagler – 4.8 mmTelevue – Nagler – 7 mmTelevue – Nagler – 9 mmTelevue – Nagler – 13 mmTelevue – Nagler Type 2 – 12 mmTelevue – Nagler Type 2 – 16 mmTelevue – Nagler Type 2 – 20 mmTelevue – Nagler Type 4 – 12 mmTelevue – Panoptic – 15 mmTelevue – Panoptic – 19 mmTelevue – Panoptic – 22 mmTelevue – Panoptic – 27 mmTelevue – Panoptic – 35 mmTelevue – Plössl – 8 mmTelevue – Plössl – 11 mmTelevue – Plössl – 15 mmTelevue – Plössl – 20 mmTelevue – Plössl – 25 mmTelevue – Plössl – 32 mmTelevue – Plössl – 40 mmTelevue – Plössl – 55 mmTelevue – Radian – 3 mmTelevue – Radian – 4 mmTelevue – Radian – 5 mmTelevue – Radian – 6 mmTelevue – Radian – 8 mmTelevue – Radian – 10 mmTelevue – Radian – 12 mmTelevue – Radian – 14 mmTelevue – Wide Field – 15 mmTelevue – Wide Field – 19 mmVixen – Lanthanum LV – 2.5 mmVixen – Lanthanum LV – 4 mmVixen – Lanthanum LV – 5 mmVixen – Lanthanum LV – 6 mmVixen – Lanthanum LV – 9 mmVixen – Lanthanum LV – 10 mmVixen – Lanthanum LV – 12 mmVixen – Lanthanum LV – 15 mmVixen – Lanthanum LV – 20 mmVixen – Lanthanum LV – 25 mmZeiss – Abbe – 4 mmZeiss – Abbe – 6 mmZeiss – Abbe – 10 mmZeiss – Abbe – 16 mmZeiss – Abbe – 25 mmZeiss – Abbe – 34 mm Eyepiece Focal Length MM Apparent Field Of View Degrees Calculated Results Calculated Magnification X Calculated True Field Of View Degrees
