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Abstract. The Fornax Spectroscopic Survey is a large optical spectroscopic survey of all 14 000 objects with 16.5 < Bj < 19.7 in a 12 deg 2 area of sky centered on the Fornax Cluster. We are using the 400-fibre Two Degree Field spectrograph on the Anglo-Australian Telescope: the multiplex advantage of this system allows us to observe objects conventionally classified as "stars" as well as "galaxies". This is the only way to minimise selection effects caused by image classification or assessing cluster membership.In this paper we present the first measurements of low surface brightness (LSB) galaxies we have detected both in the Fornax Cluster and among the background field galaxies. The new cluster members include some very low luminosity (MB ~ -11.5 mag) dwarf ellipticals, whereas the background LSB galaxies are luminous (-19.6 < MB < -17.0 mag) disk-like galaxies.

Abstract. We are using the 2dF spectrograph to make a survey of all objects ("stars" and "galaxies") in a 12 deg 2 region towards the Fornax cluster. We have discovered a population of compact emission-line galaxies unresolved on photographic sky survey plates and therefore missing in most galaxy surveys based on such material. These galaxies are as luminous as normal field galaxies. Using Ho-to estimate star formation they contribute at least an additional 5% to the local star formation rate.

Abstract. Recent studies have demonstrated that many galaxy clusters have luminosity functions (LFs) which are steep at the faint end. However, it is equally clear that not all clusters have identical LFs. In this paper we explore whether the variation in LF shape correlates with other cluster or environmental properties.

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