Exhibit 31.1 (i)

                                  CERTIFICATION

                       Chase Mortgage Finance Corporation,
                       Mortgage Pass-Through Certificates
                          Series 2004-S1 (the "Trust")

I, Thomas L. Wind, Co-Chief Executive Officer of Chase Mortgage Finance
Corporation, the depositor of assets into the above-referenced Trust, certify
that:

1.    I have reviewed this annual report on Form 10-K, and all reports on Form
      8-K containing distribution or servicing reports filed in respect of
      periods included in the year covered by this annual report, of the Trust;

2.    Based on my knowledge, the information in these reports, taken as a whole,
      does not contain any untrue statement of a material fact or omit to state
      a material fact necessary to make the statements made, in light of the
      circumstances under which such statements were made, not misleading as of
      the last day of the period covered by this annual report;

3.    Based on my knowledge, the distribution or servicing information required
      to be provided to the trustee by the servicer under the pooling and
      servicing agreement for inclusion in these reports is included in these
      reports;

4.    Based on my knowledge and upon the annual compliance statement included in
      this annual report and required to be delivered to the trustee in
      accordance with the terms of the pooling and servicing agreement, and
      except as disclosed in this annual report, the servicer has fulfilled its
      obligations under the pooling and servicing agreement; and

5.    The reports disclose all significant deficiencies relating to the
      servicer's compliance with the minimum servicing standards based upon the
      report provided by an independent public accountant, after conducting a
      review in compliance with the Uniform Single Attestation Program for
      Mortgage Bankers or similar procedure, as set forth in the pooling and
      servicing agreement, that is included in these reports.

Date: March 30, 2005

/s/ Thomas L. Wind
-------------------------------------------
Name:    Thomas L. Wind
Title:   Co-Chief Executive Officer
Company: Chase Mortgage Finance Corporation
<PAGE>

                                                               Exhibit 31.1 (ii)

                                  CERTIFICATION

                       Chase Mortgage Finance Corporation,
                       Mortgage Pass-Through Certificates
                          Series 2004-S2 (the "Trust")

I, Thomas L. Wind, Co-Chief Executive Officer of Chase Mortgage Finance
Corporation, the depositor of assets into the above-referenced Trust, certify
that:

1.    I have reviewed this annual report on Form 10-K, and all reports on Form
      8-K containing distribution or servicing reports filed in respect of
      periods included in the year covered by this annual report, of the Trust;

2.    Based on my knowledge, the information in these reports, taken as a whole,
      does not contain any untrue statement of a material fact or omit to state
      a material fact necessary to make the statements made, in light of the
      circumstances under which such statements were made, not misleading as of
      the last day of the period covered by this annual report;

3.    Based on my knowledge, the distribution or servicing information required
      to be provided to the trustee by the servicer under the pooling and
      servicing agreement for inclusion in these reports is included in these
      reports;

4.    Based on my knowledge and upon the annual compliance statement included in
      this annual report and required to be delivered to the trustee in
      accordance with the terms of the pooling and servicing agreement, and
      except as disclosed in this annual report, the servicer has fulfilled its
      obligations under the pooling and servicing agreement; and

5.    The reports disclose all significant deficiencies relating to the
      servicer's compliance with the minimum servicing standards based upon the
      report provided by an independent public accountant, after conducting a
      review in compliance with the Uniform Single Attestation Program for
      Mortgage Bankers or similar procedure, as set forth in the pooling and
      servicing agreement, that is included in these reports.

Date: March 30, 2005

/s/ Thomas L. Wind
-------------------------------------------
Name:    Thomas L. Wind
Title:   Co-Chief Executive Officer
Company: Chase Mortgage Finance Corporation