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HamStar Telescope

The HamStar Telescope (HST) is an ongoing remote telescope project. This telescope system is located at the Starfront Remote Observatories (SFRO) in Rockwood, Texas, United States (31.5480 N, 99.3829 W). It is built for wide-field astrophotography and large-field narrowband imaging surveys.

Key Instruments

Telescope

Takahashi FSQ106EDXIV

0.11-m

Apochromatic Refractor

Focal Length = 0.53m (F/5.0)

Camera

ZWO

ASI 2600MM Pro

Pixel Scale 1.464"/pix

Field of View 2.539 x 1.697 deg

Filters

Antlia V-Pro LRGB

Antlia SII/Ha/OIII

Narrowband FWHM=3nm

Detailed Introduction

Useful links:

Starfront Observatories Clear Sky Chart - the most up-to-date weather forecast. 

Starfront Observatories - Observatory Status - observatory status; our telescope is located in Building 3. 

1. The Mount: Software Bisque Paramount MyT

  • The Paramount MyT serves as the cornerstone of our system. This robust and precise equatorial mount ensures smooth and accurate tracking of celestial objects as they move across the sky. For our system, the recommended maximum unguided exposure time is ~300s.
     

2. The Telescope: Takahashi FSQ106EDXIV

  • Aperture: 106mm

  • Focal Length: 530mm

  • This telescope is a wide-field imaging astrograph. The Takahashi FSQ106EDXIV offers exceptional optical quality, delivering sharp, vibrant images with minimal distortions.
     

3. The Camera: ZWO ASI 2600MM Pro with Filter Wheel

  • Pixel Size: 3.76 micrometers (resolution: 1.464 arcseconds per pixel)

  • Readout Noise: ~1.5 electrons

  • Dark Current: ~0.008 electrons/second/pixel

  • Full-Well Capacity: ~17,000 electrons

The ZWO ASI 2600MM Pro, paired with an Electronic Filter Wheel (EFW). Its highly sensitive monochrome sensor can record faint celestial objects while maintaining low noise levels. The statistics above are provided at Gain = 100, Offset = 10, and Sensor Temperature = -10C.

4. The Filters

  • Filter Types:

    • Luminance (L)

    • Red (R), Green (G), Blue (B)

    • Narrowband: Hydrogen-alpha (Hα), Sulfur II (SII), Oxygen III (OIII)

All narrowband filters have a Full-Width Half Maximum (FWHM) of ~3nm.

5. Field of View

Our setup excels at wide-field imaging with a field of view of 2.539° x 1.697°. This allows us to photograph expansive celestial objects in one frame and conduct large-field surveys.

6. Guiding System

  • Guide Scope: ZWO OAG-L (Off-Axis Guider)

  • Guide Camera: ZWO ASI 120MM-Mini

With an off-axis guider, the guiding is done at a focal length of 530mm.

7. Focuser and Camera Rotator: Moonlite NiteCrawler WR35


Demo Image: NGC 1333 and its Vicinity
Total Exposure: 82.5 hours in LRGB + Ha
In cooperation with Yuning Zhu

 

© 2019-2025 by Bangzheng Sun.

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