the NGC and IC catalogs, and correcting many bugs and errors.  If there are errors in 

converting his data into the internal Gemini databases, they are caused by the system's 

developer. 

5.3.2.4  Messier (Messier Objects Catalog) 

There are 110 Messier objects stored in this catalog, among which are nebulae, galaxies 

and clusters. To select one of them, type in its Messier number from M1 to M110 and 

then press the RA+ button.  The object's designation, hour angle and elevation will be 

displayed, indicating that it has been selected. 

5.3.2.5  NGC (New General Catalog) 

There are 8290 objects stored in this catalog, among which are nebulae, galaxies and 

clusters.  To select one of them, type in its catalog number and press the RA+ button.  

The object's designation, hour angle and elevation will be displayed, indicating that it has 

been selected. 

5.3.2.6  IC (Index Catalog) 

There are 5437 objects stored in this catalog, among which are nebulae, galaxies and 

clusters.  To select one of them, type in its catalog number and press the RA+ button.  

The object's designation, hour angle and elevation will be displayed, indicating that it has 

been selected. 

Both NGC and IC catalogs include some objects identified by an extension letter after the 

numeric identification. For example, NGC 6246 and 6246A are both in the NGC catalog.   

5.3.2.7  Sh2 (Sharpless 2 Catalog) 

There are 313 HII objects of the Sharpless 2 catalog stored in Gemini.  To select one of 

them, type in its catalog number and press the RA+ button.  The object's designation, 

hour angle and elevation will be displayed, indicating that it has been selected. 

5.3.2.8  Solar System (Solar System Catalog) 

There are 10 objects (8 planets, the Sun and the Moon) stored in this catalog.  To select 

one of them, scroll through the list until you see the one desired, and press the RA+ 

button.  The object's designation, hour angle and elevation will be displayed, indicating 

that it has been selected.   

WARNING

: Never point the telescope at the Sun without proper filtration!  Doing so 

can cause severe damage to your eyes and your equipment. 

5.3.2.9  Bright Stars (Bright Star Catalog) 

There are 169 Bright Stars with their common names stored in this catalog and arranged 

alphabetically.  To select one of them, scroll through the alphabet until you see the first 

letter of the star' s common name.  Press RA+ to display the list of all stars that begin 

with that letter.  Scroll through the list until you see the star desired, and press the RA+ 

Gemini Users Manual 

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