Gemini
Gémini 2 system
How to load a catalog into the Gemini :
Unzip the catalogs you are interested. The catalog use in the Gemini must be ".guc" type.
Using an ethernet cable between Gemini and your computer :
- establish a fixed IP to your computer (eg 192.168.0.1)
Control Panel / Network Connections / network connection properties / TCP IP
- use your web browser by connecting to the address 192.168.0.111
- in the new window : username = admin and validated without password
- Gemini homepage appears
click on "SD Card" then "HCFirmware"
- select the new catalog (click on Browse, select .guc file)
and press Submit
- on the hand controler, go to Menu, HC, and press Dowload
a scrollbar appears ... the new catalog is load
Now you can use it
You can also transfer catalog into the directory "HCFirmware" by using a FTP program
- paramatrers software (see above)
- connect the Gemini to your computer
- submit catalogs in Gemini "HCFirmware" directory
- on the hand controler, go to Menu, HC, and press Dowload
a scrollbar appears ... the new catalog is load
Some catalogs :
With these catalogs you can goto the object and have some information about it
List of Constellations
The 88 constellations with name and abbreviation
You enter the English name of constellation (or the first letters) you will have the Latin correspondence
you enter the Latin abbreviation (3 letters) and you will have the constellation name
with "goto" button, you will go to the brightest star of this constellation
click here to download this catalog
(03/09/2011 version)
Stars listed by constellation
This catalog includes all stars brighter than magnitude 3.5, with at least one star by constellation
Enter the first letters of the constellation (abbreviation) and choose your star (335 stars are listed)
information provided :
- constellation and the Greek letter of the star,
- name,
- magnitude (or variation)
- if double or multiple star (magnitude of components and separation)
- distance from sun (light years)
click here to download this catalog
(03/09/2011 version)
High proper motion stars
List the 68 stars with large proper motion (> 2 "per year)
Enter its name or if you do not know the name, validate and scroll (they are listed in descending order of proper motion)
information provided :
- name and constellation,
- proper motion ( " per year),
- magnitude (as well as its components if it is double, and separation)
- spectral type,
- distance to the sun (light years)
click here to download this catalog
(25/02/2011 version)
Double stars with short orbital period
List the 132 double stars with short orbital period (P <160 years)
bright and enough separated (magnitude <12, generally less than 2 magnitude difference and maximum separation at least 0"7)
they are listed by constellation
Enter abbreviated name of the constellation and choose your star
information provided :
- star name and constellation,
- orbital period,
- magnitude of two stars,
- minimum and maximum separation,
- expected year of maximum spacing
click here to download this catalog
(26/02/2011 version)
Close double stars
List 1229 close binaries (separation of 0"5 to 1"4, magnitude <9, less than 2 magnitude difference betwen component)
they are listed by constellation and by decreasing separation
Enter the abbreviated name of the constellation and choose your star
information provided :
- star name and constellation,
- magnitude of two stars,
- separation,
- spectral type
click here to download this catalog
(5/09/2011 version)
Red and Carbon stars
List 489 red stars (to magnitude 8, spectral type M5 to M8) or carbon stars (to magnitude 9.5, spectral type C2 to C8, N2 to N8, R2 to R8)
(temperature from 2000 to 5000 ° K)
they are listed by constellation and then by decreasing brightness
Enter the abbreviated name of the constellation and choose your star
information provided :
- star name and constellation,
- magnitude (or magnitude variation),
- if it is a double star,
- spectral type
click here to download this catalog
(06/09/2011 version)
Blue stars
List 582 blue stars to magnitude 9.5
this includes stars of spectral type WC, WN and O (temperature from 25,000 to 50,000 ° K)
they are listed by constellation and spectral type
Enter the abbreviated name of the constellation and choose your star
information provided :
- star name and constellation
- magnitude,
- spectral type
click here to download this catalog
(version 06/09/2011)
The main objects by constellation
This catalog contains the brighter objects visible
Are listed : 140 bright stars (STAR), 518 double stars (DOUBLE), 80 variable stars (VARIABLE), 34 red stars (RED), 113 open clusters (OC), 58 globular clusters (GC), 31 diffuse nebulae (NEB), 46 planetary nebulae (PN) and 176 galaxies (GAL)
Enter the Latin abbreviation of the constellation and select your object
You can make a finer selection with constellation abbreviation, a blank space and object type
(or first letters : star, double, variable, red, OC, GC, NEB, PN, GAL)
For example you can ask "AND GAL" for the main galaxy in Andromeda
information provided :
for bright stars (mag >3 with at least one star by constellation)
- name, magnitude and distance
for double stars (less than 16 by constellation, mag >7, separation from 0"9 to 120", less than 3 magnitude difference)
- name, magnitude of stars, separation (in ") and sometimes color
for variable stars (less than 4 per constellation, > 1 magnitude variation, magnitude max >7)
- name, brightness variations, variable type and period of variation
for red stars (0 or 1 by constellation, mag >8)
- name and magnitude
for deep sky objects (20 objects max per constellation, Max mag: OC = m7, GC = m9, GAL = m10-11, PN = m11-12)
- name, magnitude, apparent size, galaxy type (S, SB, SO or E) and distance from Sun (in light years or million light years)
click here to download this catalog
(11/09/2011 version)
Messier objects
This catalog contains the 110 Messier objects
information provided :
- name,
- object type,
- abbreviated constellation,
- magnitude,
- apparent size,
- and distance from Sun (in light years or million light years)
click here to download this catalog
(12/02/2011 version)
NGC objects
This catalog contains 7840 objects of the NGC as well as components (A, B ...). This represents a total of 8186 objects
The different types of object are : Galaxy (GAL), open cluster (OC), globular cluster (GC), diffuse nebula (NEB) may be associated with a cluster (Neb + OC), planetary nebula (PN), remnant of supernovae (REMSN), group of stars (group*), star (star) or nothing (nothing)
Enter the number of search object. I advise you, for objects of 1, 2 or 3 figures, to put a space after the number
information provided :
- NGC number and constellation,
- if the same than another object,
- magnitude,
- apparent size (' or "),
- some information on observation:
Galaxies: spiral (S), barred spiral (SB) with more or less wrapped arms (a, b, c, d), elliptical (E0 (round) to E7 (flat)), lenticular (SO) and irregular (Irr)
Globular Cluster: from more concentrated (I) at least concentrate (XII), and magnitude of the brightest stars
Open Cluster: from more concentrated (I) at least concentrate (IV), brightness 1 to 3 (more uniform brightness to less homogeneous), approximate number of stars and magnitude of the brightest
Néluleuse diffuse: emision (E) or Reflection (R)
Planetary nebula: magnitude of the central star
- and distance (in light years or million light years)
click here to download this catalog
(11/09/2011 version)
NGC objects by constellation
This catalog is a reduced version of the previous (objects brighter than magnitude 12 or not informed, representative 2210 objects)
The different types of object are: Galaxy (GAL), open cluster (OC), globular cluster (GC), diffuse nebula (NEB) may be associated with a cluster (Neb + OC), planetary nebula (PN), remnant of supernovae (REMSN) and group of stars (group*)
Enter the abbreviated constellation, followed by a space and the type of object. You just have to choose one that interests you
information provided :
- constellation, object type and NGC number
- if the same than another object,
- magnitude,
- apparent size (in 'or "),
- some information (see previous catalog)
- and distance (in light years or million light years)
click here to download this catalog
(11/09/2011 version)
Create your own catalog
Use a text editor
Write your data as follows:
name , Right Ascension , DEclination , information (separator comma is important)
The Right Ascension is in the form 00:00:00 (6 digits separated by ":") and DEclination as +00:00:00 (sign (+ or -) 6 digits required
separated by ":")
A maximum of 20 characters for the name and 50 for information (this can vary slightly depending on the characters used)
Save in text format and then rename your file with the extension ". GUC"
Comments:
French accents (à, é, è, ê) are taken into account
Comma can not be used because it serves as a delimiter (between the name, position and information) for the Gemini
Greek letters are considered, you must write in the following way:
α for α (alpha)
β for β (beta)
γ for γ (gamma)
δ for δ (delta)
ε for ε (epsilon)
ζ for ζ (zeta)
η for η (eta)
θ for θ (theta)
ι for ι (iota) appears as "i"
κ for κ (kappa) appears as "k"
λ for λ (lambda)
μ for μ (mu)
ν for ν (nu) appears as "v"
ξ for ξ (xi)
ο for ο (omicron) appears as "o"
π for π (pi)
ρ for ρ (rho) appears as "p"
ς for σ (sigma)
σ for σ (sigma) = doubloon
τ for τ (tau) appears as "t"
υ for υ (upsilon)
φ for φ (phi)
χ for χ (chi)
ψ for ψ (psi)
ω for ω (omega)
Here are some links in english used to develop these catalogs:
Double stars :
The Washington Visual Double Star Catalog (Mason+ 2001-2011) on the CDS database
Sixth Catalog of Orbits of Visual Binary Stars
best multiple stars by Saguaro club
Top 200 most beautiful Double Stars
Variables stars :
AAVSO search tool
light curves
Nearby stars :
Nearby Stars, Preliminary 3rd Version (Gliese+ 1991) on the CDS database
the one hundred nearest star systems
Red and Carbon stars :
General Catalog of galactic Carbon stars, 3d Ed. (Alksnis+ 2001) on the CDS database
Stars catalogs :
Hipparcos, the New Reduction (van Leeuwen, 2007) on the CDS
All-sky Compiled Catalogue of 2.5 million stars (Kharchenko+ 2009) on the CDS
Catalogue of the Brightest Stars (Ochsenbein+ 1988) on the CDS
Catalogue of Stellar Spectral Classifications (Skiff, 2010) on the CDS
and still many other interesting catalogs on the site of CDS
Objects by constellation :
Richard Dibon-Smith web page
Deep sky objects :
the big list of Saguaro club
the ngc/ic project
Exotic objects :
Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010) on the CDS
Ressources on the Gemini 2 :
Gemini-2 Telescope Mount Controller
My website (in French)
Send me a message if there are problems or errors : 
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