List interesting objects not part of NGC or IC in a separate catalog …

…file

NGC_guide.txt

@@ -15,6 +15,7 @@
     GGroup: Group of galaxies
     PN: Planetary Nebula
     HII: HII Ionized region
+    DrkN: Dark Nebula
     EmN: Emission Nebula
     Neb: Nebula
     RfN: Reflection Nebula

README-IT.md

@@ -71,3 +71,7 @@ Alcuni nomi comuni degli oggetti sono presi da sorgenti internet come Wikipedia.
    di posizione sono ottenuti dalla tabella HEASARC lbn, campi [large_dimension], [small dimension].
    Se la sorgente dei dati è diversa, allora è specificata nelle note dell'oggetto.
 
+#### ADDEDUM
+
+La cartella 'addendum' contiene un file di catalogo separato che lista una serie di oggetti interessanti
+per gli astrofili, ma che non sono parte dei cataloghi NGC o IC.

README.md

@@ -70,3 +70,7 @@ Some common names are taken from internet sources like Wikipedia.
    from HEASARC lbn table [large_dimension], [small dimension]. If data source is different
    then is specified in object notes.
 
+#### THE ADDENDUM
+
+The 'addendum' folder contains a separate catalog file with notably objects that are not
+part of the NGC or IC catalog. These objects may be of some interest to amateur astronomers.

addendum/addendum.csv

@@ -0,0 +1,8 @@
+Name;Type;RA;Dec;Const;Smax;Smin;PosAng;B-Mag;V-Mag;J-Mag;H-Mag;K-Mag;SurfBr;Hubble;Cstar U-Mag;Cstar B-Mag;Cstar V-Mag;M;NGC;IC;Cstar Names;Identifiers;Common names;NED notes;OpenNGC notes
+B33;DrkN;05:40:59.0;-02:27:30;Ori;6.00;4.00;90;;;;;;;;;;;;;;;;Horsehead Nebula;;Coordinates and diameters taken from Simbad.
+C9;HII;22:57:54.0;+62:31:06;Cep;50.00;30.00;;;;;;;;;;;;;;;;LBN 529,SH 2-155;Cave Nebula;;Coordinates taken from Simbad.
+C14;*Ass;02:20:42.0;+57:08:15;Per;50.00;50.00;;;;;;;;;;;;;;;;;Double Cluster, h & chi Persei;;Coordinates and dimensions inferred by author.
+C41;OCl;04:26:54.0;+15:52:00;Tau;330.00;330.00;;;;;;;;;;;;;;;;Mel 25;Hyades;;Coordinates taken from Simbad. Diameters and magnitude taken from Wikipedia.
+C99;DrkN;12:31:19.0;-63:44:36;Cru;420.00;300.00;;;;;;;;;;;;;;;;;Coalsack Nebula;;Coordinates taken from Simbad. Diameters taken from Wikipedia.
+HCG79;GGroup;15:59:11.9;+20:45:31;Ser;2.80;;;;;;;;;;;;;;;;;IRAS 15570+2053;Seyfert's Sextet;;Diameter inferred by the author.
+HCG92;GGroup;22:35:59.0;+33:57:30;Peg;4.40;;;;;;;;;;;;;;;;;IRAS 22337+3342;Stephan's Quintet;Contains the GPair NGC 7318.;Diameter inferred by the author.