Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Hourglass nebula  ·  IC 1274  ·  IC 1275  ·  IC 4685  ·  Lagoon nebula  ·  M 20  ·  M 21  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6531  ·  NGC 6544  ·  NGC 6546  ·  NGC 6559  ·  NGC 6568  ·  The star 11Sgr  ·  The star 4Sgr  ·  The star 7Sgr  ·  The star 9Sgr  ·  Trifid nebula
Getting plate-solving status, please wait...
test: Espirti 100 + Ricarrdi 0.75x SuperReducer, need 1mm more backfocus, Robert Huerbsch
test: Espirti 100 + Ricarrdi 0.75x SuperReducer, need 1mm more backfocus
Powered byPixInsight

test: Espirti 100 + Ricarrdi 0.75x SuperReducer, need 1mm more backfocus

Getting plate-solving status, please wait...
test: Espirti 100 + Ricarrdi 0.75x SuperReducer, need 1mm more backfocus, Robert Huerbsch
test: Espirti 100 + Ricarrdi 0.75x SuperReducer, need 1mm more backfocus
Powered byPixInsight

test: Espirti 100 + Ricarrdi 0.75x SuperReducer, need 1mm more backfocus

Equipment

Loading...

Acquisition details

Loading...

Description

Testing the Ricarrdi reducer with the Espirit 100 = 415mm f/4.15 APO refractor

Illumination is good on full frame sensor. Need about 1 more mm of backfocus I estimate?

Focusing was done by eye in viewfinder as this was just a test and is slightly off.

24 x 60s unguided on CEM25p. Distortion on bottom right corner is from some overlap of frames with different camera angle.

Comments

Sky plot

Sky plot

Histogram

test: Espirti 100 + Ricarrdi 0.75x SuperReducer, need 1mm more backfocus, Robert Huerbsch

In these public groups

Cloudy Nights