Lumicon Easy Guider LG1015 Скачать руководство пользователя страница 8

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Example #1:

•

NIKON D7000 DSLR

BFD = 46.5mm

•

T-Ring Thickness = 8.0mm

BFD = 20mm

•

ZWO ASI “Mini” camera (all models) as guider

BFD = 8.5mm

•

Extension Tube Length (Provided with Guider)

BFD = 25.0mm

Calculation:

First Calculate B:

B = Camera BFD + 17.5 + T-Ring thickness – Extension Tube
Length
B = 46.5 + 17.5 + 8 - 25
B = 47mm

Next Evaluate C:

C = B – Guider camera BFD
C = 47 – 8.5
C = 38.5

C is greater than 27 and less than 48 so the guide camera will
come to focus.

Содержание Easy Guider LG1015

Страница 1: ...Lumicon Easy Guider for 2 inch focuers The Original Off Axis Guider Patent 4 448 500 1981 Part number LG1015 Configured for DSLR Camera setups...

Страница 2: ...Off Axis Guiding Guiding occurs with the same light path as the imaging detector thereby eliminating the effects due to differential flexure slop of the auxiliary guide scope Differential flexure in...

Страница 3: ...int for success Make sure the guide camera is equally locked in place Any movement of the guide camera will introduce artificial guiding errors Off Axis Guiding is powerful A common mistake made when...

Страница 4: ...er from the guider body Thread the adapter into the front of your camera adapter DSLR T ring and firmly tighten You may need to use a spacer ring or alternate adapter in order for the guide camera to...

Страница 5: ...ed Attach the 1 25 extension tube to the guide camera DSLR cameras have a larger Back Focal Distance therefore the guide cameras need to be spaced back further The extension tube allows for the requir...

Страница 6: ...ation of the guide chip with the edge of the pick out prism in a similar fashion as you did the main camera However this time it will be a blind alignment Just do your best In the figure below we ve t...

Страница 7: ...to focus For this to happen the distance of both camera detectors must be located the same distance from the center of the pick out prism All units in mm Goals A must B C must be 27mm and 48mm A Guid...

Страница 8: ...der o BFD 8 5mm Extension Tube Length Provided with Guider o BFD 25 0mm Calculation First Calculate B B Camera BFD 17 5 T Ring thickness Extension Tube Length B 46 5 17 5 8 25 B 47mm Next Evaluate C C...

Страница 9: ...r o BFD 8 5mm Extension Tube Length Provided with Guider o BFD 25 0mm Calculation First Calculate B B Camera BFD 17 5 T Ring thickness Extension Tube Length B 44 17 5 8 25 B 44 5mm Next Evaluate C C B...

Страница 10: ...ASI174MM Mini Mono 8 5 ASI290MM Mini Mono 8 5 Other Guiders Back Focal Distance Table Model Back Focus mm Lodestar 12 5 QHYCCD5 Version 1 12 5 QHY5III174 11 0 QHY5III178 11 0 QHY5III185C 11 0 QHY5III...

Страница 11: ...adjust the focus of the guide frame by moving the guide camera in and out of its draw tube A Bahtinov mask is very useful for this task Once best focus is found lock down the guider camera locking scr...

Страница 12: ...12 Lumicon is owned by Optical Structures Incorporated 11371 Pyrites Way Suite A Rancho Cordova CA 95670 916 638 2003 www FarpointAstro com...