[Paper Review] Current and future capabilities of the 74-inch telescope of Kottamia astronomical observatory in Egypt

Yosry A. Azzam, Gamal B. Ali+5 more|arXiv (Cornell University)|Feb 12, 2014

Astronomical Observations and Instrumentation2 references3 citations

TL;DR

This paper details the current operational status and planned upgrades of the 74-inch telescope at Kottamia Astronomical Observatory (KAO) in Egypt, including a new optical system, computerized telescope and dome control, and newly installed CCD cameras and a grating spectrograph from Okayama Astrophysical Observatory. The spectrograph is successfully tested and operational at the F/18 Cassegrain focus, significantly enhancing KAO’s capabilities for direct imaging and spectroscopic observations in optical astronomy.

ABSTRACT

In this paper, we are going to introduce the Kottamia Astronomical Observatory, KAO, to the astronomical community. The current status of the telescope together with the available instrumentations is described. An upgrade stage including a new optical system and a computer controlling of both the telescope and dome are achieved. The specifications of a set of CCD cameras for direct imaging and spectroscopy are given. A grating spectrograph is recently gifted to KAO from Okayama Astrophysical Observatory, OAO, of the National Astronomical Observatories in Japan. This spectrograph is successfully tested and installed at the F/18 Cassegrain focus of the KAO 74" telescope.

Motivation & Objective

• To present the current technical and operational status of the 74-inch telescope at Kottamia Astronomical Observatory (KAO) to the international astronomical community.
• To document the ongoing upgrades, including a new optical system and computerized control of the telescope and dome.
• To describe the specifications and capabilities of newly installed CCD cameras for direct imaging and spectroscopy.
• To report the successful integration and testing of a grating spectrograph gifted by Okayama Astrophysical Observatory (OAO), Japan.
• To establish KAO as a functional and modern facility for optical astrophysical research in the Middle East.

Proposed method

• Implementation of a new optical system to improve image quality and light collection efficiency on the 74-inch telescope.
• Installation of a computerized control system for precise telescope and dome positioning and automation.
• Integration of multiple CCD cameras optimized for both direct imaging and spectroscopic observations at the F/18 Cassegrain focus.
• Procurement and installation of a grating spectrograph from Okayama Astrophysical Observatory (OAO), Japan, for high-resolution optical spectroscopy.
• Testing and calibration of the spectrograph system to ensure operational reliability and data quality.
• Documentation of all instrument configurations and performance specifications for scientific use.

Experimental results

Research questions

• RQ1 What are the current technical capabilities of the 74-inch telescope at Kottamia Astronomical Observatory?
• RQ2 How do the recent upgrades—new optics and computerized control—enhance the telescope’s performance and usability?
• RQ3 What are the specifications and observational capabilities of the newly installed CCD cameras for imaging and spectroscopy?
• RQ4 How effective is the newly acquired grating spectrograph in supporting optical spectroscopic research at KAO?
• RQ5 What is the overall impact of these upgrades on KAO’s role in regional and international astrophysical research?

Key findings

• The 74-inch telescope at Kottamia Astronomical Observatory is now equipped with a modernized optical system, significantly improving image quality and light throughput.
• The telescope and dome are now under full computerized control, enabling automated pointing, tracking, and operational efficiency.
• Multiple CCD cameras are available for both direct imaging and spectroscopic observations, supporting a broad range of astrophysical investigations.
• The grating spectrograph from Okayama Astrophysical Observatory has been successfully tested and is operational at the F/18 Cassegrain focus, enabling high-quality optical spectroscopy.
• The combined upgrades position KAO as a capable and reliable facility for optical astronomy in the Middle East region.
• The observatory is now formally documented and accessible to the international astronomical community through publication in the NRIAG Journal of Astronomy and Astrophysics.