You can get the list of galactic novae and associated data from this GitHub site. The advantage of this is that I can do a better job of providing a version history, something that I can't say I've done well at in recent years. You can click here for a revision history describing changes made since this list moved to GitHub in September 2019.
galnovae.txt is the main data file, containing one line of information for each galactic nova. galnovae.csv is the same, except in CSV form (the program cvt2csv.c is used to convert text to CSV.) The actual data in these two files are identical, or at least ought to be.
galnovae.err provides some errata and comments, including a (pre-GitHub) version history at the end, explanations as to why some objects were omitted, comments on repeating novae, etc. For most people, these will be the only files of any interest.
Users of Guide 8.0 or 9.0, on the other hand, should click here for data, errata, and the files needed to display the data in Guide. (Same data, same errata, but the .tdf ("text definition file") will tell Guide how to parse the data for display.)
This list was originally assembled by John Greaves, starting from H. W. Dürbeck's "Reference Catalogue of Galactic Novae" with a few corrections and extensions to bring it up to date (Dürbeck's catalog was complete to the end of 1989). Since then, I (Bill Gray) have extended it still further with data from the Alert and Special Alert notices of the AAVSO, CBETs (Central Bureau Electronic Telegrams), and IAUCs (International Astronomical Union Circulars). It has also been matched and merged with the IAU's list of galactic novae. That list supplied references and dates of discovery for novae up to mid-2010; it also allowed for some cross checking on discoverers and RA/decs for those novae, resulting in a few corrections. Data from 2010 to the present has come from Koji Mukai's list of recent galactic novae and from The Astronomer's Telegram, which have conveniently stepped into the void caused by the almost total absence of IAUCs.
As Koji Mukai points out, the designations for 2016 novae in Sagittarius are muddled. I've marked those designations with a '?', and will leave them that way until we're sure they're actually correct. (Edit: it now appears reasonably certain that they are correct. But to avoid confusion, I agree with Koji that we'd best use the variable star or discovery designations. Those are less ambiguous. So I've left the question marks in place.)
Please send comments/corrections to pôç.ötulpťcéjôřp@otúlm (a bit of a Turing test to tell spambots from humans!)
Note: The references are given at the end of each line, with the following meanings:
'A' = AAVSO Alert Notice 'a' = AAVSO Special Notice 'C' = CBET; ' ' = IAUC; 'AN'=Astronomische Nachrichten 'T' = The Astronomer's Telegram 'PZ' = Peremennye Zvezdy
Note also that the references are not necessarily complete; i.e., if you did a bit of hunting around, you might find that an object was also mentioned in another CBET or IAUC. (But I think the IAUC references are complete for objects since 1983. Before then, you may get only the discovery IAUC, or none at all.) If you find missing references, please let me know so that I can fix them.
Further note that on 2017 Feb 26, the format changed to allow seven bytes (including a space) per reference instead of just six. The Astronomer's Telegram numbers just passed 10000, and the IAUCs will do that if they start being published again, so we needed the extra byte. That triggered a change in the galnovae.tdf and galnovae.idf files as well.
Quite a bit of updating is still in order. The 'min_mag' and 'class' columns are empty for objects found since 2008. T3 data was given in Dürbeck, but is missing for everything since 1989. There are some holes in both discovery and maximum magnitudes.