News:

July 2003:
Data from SUMSS at 843 MHz are adding to Cluster DB.

December 2002:
New services were developed: on-fly drawing of a radio-optical maps and presenting of optical, radio (and others) FITS-images of cluster objects in some cluster fields.

September 2002:
New APM data for 330 clusters are included in DB. While there are not APM data for next (from 2712) Abell clusters:
A63, 347, 372, 396, (402), 404, 426, 427, 429, 449, 493, 502, 522, 527, 531, 538, 539, 541, 542, 545, 546, 547, 548, 550, 551, 553, 555, 581, 592, 594, 619, 623, 644, 731, 753, 754, 790, 823, 842, 857, 955, 966, (1465), 1646, 2319, 2535.
There are not some more APM data for ACO clusters on southern sky
(A2757, A3299, A3358, A3365, A3367, A3368, A3371, A3373, A3374, A3375, A3377, A3383, A3384, A3386, A3387, A3388, A3390, A3392, A3394, A3396, A3400, A3406, A3407, A3408, A3409, A3410, A3411, A3412, A3413, A3414, A3415, A3416, A3417, A3418, A3419, A3420, A3421, A3422, A3423, A3424, A3425, A3426, A3427, A3428, A3429, A3431, A3432, A3433, A3434, A3435, A3436, A3437, A3438, A3439, A3440, A3442, A3443, A3444, A3445, A3446, A3447, A3448, A3449, A3450, A3453, A3454, A3455, A3461, A3463, A3473, A3474, A3475, A3511, A3513, A3515, A3519, A3526, A3548, A3561, A3563, A3588, A3589, A3595, A3602, A3613, A3614, A3615, A3616, A3618, A3619, A3621, A3623, A3624, A3626, A3627, A3628, A3629, A3630, A3631, A3632, A3633, A3634, A3635, A3636, A3710).

November 2001:
The 25 Oct 2001 version of FIRST radio source catalogue had been included in cluster database.

March 2001:
New project was supported by Russian Fond of Basic Reserches grant (No 01-07-90274):
The development of the control system for Clusters of Galaxies (in Russian)

October 1999:
The JAVA-applet for browsing of radio spectra is operating now as for jdk_1.1 as for jdk_1.2 (while only for Windows browsers with corresponding Plug-ins). The new version include the possibility of printing of spectra graphics.

July 1999:
The main version of Cluster database is operating on Web-server of the Astronomical Institute again: http://www.astro.spbu.ru/CLUSTERS/

March 1999:
The new helps for Cluster database services are rewrote.
The new version of JAVA-applet for browsing of radio spectra is realized.

October 1998:
The JAVA-applet for browsing of radio spectra is operating now as for jdk_1.0 as for jdk_1.1 (i.e. for Netscape_4.06).

August 1998:
The possibitity for organizing of object list is realized in TCL-applet. It need to click on the object image with left button of mouse together with Shift-button for this.

July 1998:
The radio power calculations were added in JAVA-applet.

March 1998:
The TCL-applet images NVSS and FIRST radio sources with APM galaxies into one window now.

The JAVA-applet for browsing of radio spectra is operating now in separate window out of Netscape browser field.

February 1998:
The JAVA-applet for browsing of radio spectra and for calculation of radio luminosity of cluster radio sources begun to work after clicking on the link "radio spectra".

November 1997:
The possibility of increase in cluster field scale for TCL-applet was realised under clicking on "Zooming" (in 2, 3 and 10 times).