background image

22

Connect a standard RJ-12 cable from 
the G4’s autoguider relay port to the 
ST-4 compatible autoguider port on 
your equatorial mount 

(Figures 23.1 

and 23.2). Connect the G4 to the USB 
on your computer as you normally 
would, and operate the camera with an 
ASCOM compatible program like PHD 
Guiding.

7. Optional 

Accessories

For the StarShoot G4 Monochrome
We recommend Orion 1.25" LRGB 
and narrowband imaging filters and a 
filter wheel to capture high quality color 
images.

For the StarShoot G4 Color
An optional IR-blocking filter can be 
threaded to the G4 camera body to 
block the IR. This can help sharpen 
your images, and is especially helpful 
when used with some refractors which may allow more unfocused IR light to 
create color halos around bright stars.
Both cameras can benefit from a USB extension cable, available from Orion.
We recommend a portable field battery to power the TEC.

8. Specifications

StarShoot G4 Color
CCD Sensor: 

Sony

®

 ICX829AKA Color

Sensor format: 

1/2"

Pixel array: 

752 x 582 (437,664 total)

Pixel size: 

8.6µm x 8.3µm

Exposure range: 

Indefinite

A/D conversion: 

16 bit

Binning: 

1x1, and 2x2

Read Noise: 

Approximately 7e-

Figure 23.1. 

The G4 works with any 

mount equipped with an ST-4 compatible 
autoguide port, shown here on the Sirius 
EQ-G mount.

Figure 23.2. 

This is the pin diagram for 

the G4 and ST-4 compatible mounts.

Auto guider port

Summary of Contents for 53087

Page 1: ...oll Free USA Canada 800 447 1001 International 1 831 763 7000 Customer Support support telescope com Copyright 2020 Orion Telescopes Binoculars All Rights Reserved No part of this product instruction...

Page 2: ...photos and shar ing them with friends family and the world Figure 1 StarShoot G4 Imaging Camera and included items Contents 1 Introduction 2 1 1 The StarShoot G4 3 1 2 Feature Highlights 3 2 Getting S...

Page 3: ...lated cooling Enables you to set the exact temperature within the cooling range of the camera This allows you to take calibration images like dark frames at the exact same temperature as your light fr...

Page 4: ...nosepiece from the G4 This exposes the camera s T threads Then simply thread the camera onto your telescope Figure 2 2 Backfocus Requirement The G4 only requires 5mm of inward focus travel also someti...

Page 5: ...peed USB 2 0 port Power The StarShoot G4 s thermoelectric cooler TEC requires 12 volts DC 12VDC with approximately 1 ampere of current The camera itself can operate without the cooler just by connecti...

Page 6: ...you wish to use the camera in another program such as Nebulosity and MaximDL or if you wish to use the camera as an autoguider Select language to install and go through the prompts until the software...

Page 7: ...image downloads Connect Disconnect Connects the G4 and instantly displays the CCD temperature The G4 camera must be plugged into your PC before you click Connect Cooling The CCD Temperature will alwa...

Page 8: ...ckly find and frame a celestial object Binning in these modes provides faster download times and greater sensitivity Subframe You can selectively download a segment of the whole field of view to provi...

Page 9: ...Raw to allow for image calibration later See Image Processing Calibrate Raws The image will appear black and white at first but can later be converted to color But for quick imaging to instantly get...

Page 10: ...region of the image for the Analysis display Figure 10 The information displayed is very useful but for beginning astro imagers concentrate mainly on getting the smallest HFD possible when focusing on...

Page 11: ...you are ready to begin using the StarShoot G4 to capture images 4 1 Focusing Focusing the CCD camera is one of the most critical parts of imaging It can be challenging but Camera Studio has some help...

Page 12: ...the G4 is grossly out of focus no object will appear in the image not even a blur Increase the exposure time if needed and patiently move through the focus range of your telescope until you see the ce...

Page 13: ...Figure 12 5 Let the camera temperature stabilize You can resume imaging while this takes place It s common for the CCD temperature to fluctuate to within about 1 C of your target temperature You can v...

Page 14: ...r without using the eyepiece 2 Remove the eyepiece and replace it with the G4 camera 3 Focus the camera as outlined in Section 4 1 If necessary move the telescope to a nearby star to determine the bes...

Page 15: ...ract them from your astro images also called light images Note Make sure the CCD temperature is the same as was when took your light frames To take dark frames for subtraction from light images 1 Set...

Page 16: ...etimes look like unfocused circles or doughnuts in your images It s too late to clean your camera if you are already imaging in the field at night And even when the camera is clean dust usually finds...

Page 17: ...t to Color only applicable to StarShoot G4 Color 3 Align 4 Combine If you are using the StarShoot G4 Monochrome all of these steps can be performed in the Combine Images window Figure 16 For StarShoot...

Page 18: ...CMYG to convert the RAW file to color Align 1 With your images still open goto the Process menu and select Align The Align Images window will appear 2 Select Auto Star matching and click Align The ima...

Page 19: ...f filters such as Luminance Red Green and Blue filters to obtain a color image or with specialized narrowband filters The image processing program ultimately wants to have image data for Red Green and...

Page 20: ...rovides an excellent step by step video tutorial of LRGB processing in Photoshop or similar program that uses layers Visit www waid observatory com article LRGB html Color Balance Select Process Color...

Page 21: ...the benefit of being able to pause guiding during the down load of the main image Some cameras are sensitive to interruptions on the USB bus and if the guide camera shares the USB bus the image quali...

Page 22: ...k the IR This can help sharpen your images and is especially helpful when used with some refractors which may allow more unfocused IR light to create color halos around bright stars Both cameras can b...

Page 23: ...ochrome CCD Sensor Sony ICX829ALA Monochrome Sensor format 1 2 Pixel array 752 x 582 437 664 total Pixel size 8 6 m x 8 3 m Exposure range Indefinite A D conversion 16 bit Binning 1x1 and 2x2 Read Noi...

Page 24: ...Consult the dealer or an experienced radio TV technician for help A shielded cable must be used when connecting a peripheral to the serial ports Corporate Offices 89 Hangar Way Watsonville CA 95076 U...

Reviews: